Add bibliographical references contributed by Alan Isaac after discussion of origins of the algorithm on the mailing list.
Add bibliographical references contributed by Alan Isaac after discussion of
origins of the algorithm on the mailing list.

Kamp9/scipy,Stefan-Endres/scipy,Eric89GXL/scipy,zaxliu/scipy,andim/scipy,futurulus/scipy,nonhermitian/scipy,pnedunuri/scipy,sauliusl/scipy,pnedunuri/scipy,efiring/scipy,ales-erjavec/scipy,lukauskas/scipy,anntzer/scipy,fredrikw/scipy,nvoron23/scipy,Srisai85/scipy,jamestwebber/scipy,andyfaff/scipy,efiring/scipy,sriki18/scipy,petebachant/scipy,tylerjereddy/scipy,aarchiba/scipy,zxsted/scipy,anielsen001/scipy,andyfaff/scipy,mortada/scipy,ndchorley/scipy,andim/scipy,pbrod/scipy,fredrikw/scipy,nonhermitian/scipy,futurulus/scipy,Gillu13/scipy,vberaudi/scipy,surhudm/scipy,e-q/scipy,pyramania/scipy,gdooper/scipy,jonycgn/scipy,surhudm/scipy,Dapid/scipy,mortonjt/scipy,woodscn/scipy,bkendzior/scipy,maciejkula/scipy,Shaswat27/scipy,efiring/scipy,kleskjr/scipy,rgommers/scipy,jseabold/scipy,mhogg/scipy,vhaasteren/scipy,WillieMaddox/scipy,pyramania/scipy,giorgiop/scipy,perimosocordiae/scipy,sauliusl/scipy,felipebetancur/scipy,ilayn/scipy,chatcannon/scipy,njwilson23/scipy,sargas/scipy,jor-/scipy,ilayn/scipy,Gillu13/scipy,kalvdans/scipy,jonycgn/scipy,WarrenWeckesser/scipy,andyfaff/scipy,endolith/scipy,jsilter/scipy,fernand/scipy,jsilter/scipy,FRidh/scipy,anielsen001/scipy,Kamp9/scipy,josephcslater/scipy,anielsen001/scipy,futurulus/scipy,mingwpy/scipy,minhlongdo/scipy,pizzathief/scipy,matthew-brett/scipy,sauliusl/scipy,vigna/scipy,jamestwebber/scipy,woodscn/scipy,fernand/scipy,grlee77/scipy,befelix/scipy,tylerjereddy/scipy,Srisai85/scipy,endolith/scipy,pizzathief/scipy,jamestwebber/scipy,kalvdans/scipy,zaxliu/scipy,scipy/scipy,nvoron23/scipy,niknow/scipy,Shaswat27/scipy,richardotis/scipy,richardotis/scipy,Eric89GXL/scipy,jor-/scipy,cpaulik/scipy,teoliphant/scipy,WarrenWeckesser/scipy,scipy/scipy,juliantaylor/scipy,zxsted/scipy,behzadnouri/scipy,matthew-brett/scipy,jsilter/scipy,pschella/scipy,njwilson23/scipy,pschella/scipy,witcxc/scipy,futurulus/scipy,aman-iitj/scipy,trankmichael/scipy,larsmans/scipy,sargas/scipy,WillieMaddox/scipy,gef756/scipy,lukauskas/scipy,maniteja123/scipy,Eric89GXL/scipy,aarchiba/scipy,argriffing/scipy,surhudm/scipy,mhogg/scipy,sriki18/scipy,anielsen001/scipy,matthew-brett/scipy,aeklant/scipy,matthewalbani/scipy,zaxliu/scipy,WillieMaddox/scipy,ogrisel/scipy,Stefan-Endres/scipy,nvoron23/scipy,nvoron23/scipy,giorgiop/scipy,Dapid/scipy,Newman101/scipy,nonhermitian/scipy,jakevdp/scipy,tylerjereddy/scipy,sauliusl/scipy,vberaudi/scipy,kalvdans/scipy,newemailjdm/scipy,vigna/scipy,nmayorov/scipy,rmcgibbo/scipy,Gillu13/scipy,dch312/scipy,maciejkula/scipy,anntzer/scipy,e-q/scipy,gdooper/scipy,dch312/scipy,apbard/scipy,piyush0609/scipy,matthewalbani/scipy,jor-/scipy,sonnyhu/scipy,efiring/scipy,teoliphant/scipy,sauliusl/scipy,ilayn/scipy,mingwpy/scipy,haudren/scipy,larsmans/scipy,surhudm/scipy,FRidh/scipy,Dapid/scipy,sargas/scipy,gef756/scipy,argriffing/scipy,pyramania/scipy,pschella/scipy,scipy/scipy,njwilson23/scipy,vanpact/scipy,maciejkula/scipy,pbrod/scipy,raoulbq/scipy,vigna/scipy,bkendzior/scipy,piyush0609/scipy,Gillu13/scipy,ortylp/scipy,haudren/scipy,nonhermitian/scipy,pnedunuri/scipy,fernand/scipy,mikebenfield/scipy,vanpact/scipy,niknow/scipy,Srisai85/scipy,jseabold/scipy,rgommers/scipy,giorgiop/scipy,piyush0609/scipy,dch312/scipy,cpaulik/scipy,apbard/scipy,lukauskas/scipy,zxsted/scipy,vberaudi/scipy,pnedunuri/scipy,mingwpy/scipy,ChanderG/scipy,bkendzior/scipy,Kamp9/scipy,witcxc/scipy,juliantaylor/scipy,sargas/scipy,FRidh/scipy,ndchorley/scipy,ales-erjavec/scipy,Stefan-Endres/scipy,lukauskas/scipy,argriffing/scipy,aeklant/scipy,trankmichael/scipy,rgommers/scipy,jjhelmus/scipy,person142/scipy,gdooper/scipy,fernand/scipy,giorgiop/scipy,zerothi/scipy,chatcannon/scipy,hainm/scipy,mingwpy/scipy,zaxliu/scipy,endolith/scipy,newemailjdm/scipy,vhaasteren/scipy,arokem/scipy,ogrisel/scipy,Gillu13/scipy,andim/scipy,niknow/scipy,sonnyhu/scipy,ales-erjavec/scipy,trankmichael/scipy,niknow/scipy,argriffing/scipy,ChanderG/scipy,jakevdp/scipy,jamestwebber/scipy,anntzer/scipy,aeklant/scipy,rmcgibbo/scipy,nmayorov/scipy,teoliphant/scipy,Stefan-Endres/scipy,Newman101/scipy,mhogg/scipy,josephcslater/scipy,josephcslater/scipy,grlee77/scipy,mtrbean/scipy,perimosocordiae/scipy,pbrod/scipy,befelix/scipy,gef756/scipy,dominicelse/scipy,gertingold/scipy,anielsen001/scipy,sriki18/scipy,minhlongdo/scipy,petebachant/scipy,mortonjt/scipy,richardotis/scipy,kleskjr/scipy,mdhaber/scipy,maniteja123/scipy,minhlongdo/scipy,sriki18/scipy,zaxliu/scipy,gertingold/scipy,surhudm/scipy,niknow/scipy,Gillu13/scipy,felipebetancur/scipy,Srisai85/scipy,gfyoung/scipy,jonycgn/scipy,andim/scipy,cpaulik/scipy,kalvdans/scipy,jsilter/scipy,nvoron23/scipy,hainm/scipy,njwilson23/scipy,sonnyhu/scipy,efiring/scipy,mortada/scipy,jjhelmus/scipy,pbrod/scipy,argriffing/scipy,zerothi/scipy,fredrikw/scipy,aman-iitj/scipy,sonnyhu/scipy,ndchorley/scipy,aarchiba/scipy,mhogg/scipy,befelix/scipy,cpaulik/scipy,mgaitan/scipy,tylerjereddy/scipy,mhogg/scipy,Stefan-Endres/scipy,zxsted/scipy,haudren/scipy,haudren/scipy,gfyoung/scipy,pizzathief/scipy,pyramania/scipy,endolith/scipy,petebachant/scipy,mgaitan/scipy,WarrenWeckesser/scipy,mikebenfield/scipy,pizzathief/scipy,scipy/scipy,ortylp/scipy,perimosocordiae/scipy,felipebetancur/scipy,fredrikw/scipy,vhaasteren/scipy,anielsen001/scipy,pnedunuri/scipy,witcxc/scipy,bkendzior/scipy,jseabold/scipy,njwilson23/scipy,richardotis/scipy,rmcgibbo/scipy,person142/scipy,apbard/scipy,WillieMaddox/scipy,hainm/scipy,nmayorov/scipy,lukauskas/scipy,mortonjt/scipy,hainm/scipy,giorgiop/scipy,nonhermitian/scipy,mortonjt/scipy,newemailjdm/scipy,mortonjt/scipy,e-q/scipy,endolith/scipy,sonnyhu/scipy,fredrikw/scipy,chatcannon/scipy,ogrisel/scipy,piyush0609/scipy,behzadnouri/scipy,futurulus/scipy,larsmans/scipy,mikebenfield/scipy,WillieMaddox/scipy,gfyoung/scipy,richardotis/scipy,josephcslater/scipy,dominicelse/scipy,juliantaylor/scipy,vhaasteren/scipy,trankmichael/scipy,futurulus/scipy,ales-erjavec/scipy,Kamp9/scipy,pizzathief/scipy,kleskjr/scipy,arokem/scipy,befelix/scipy,sriki18/scipy,dominicelse/scipy,FRidh/scipy,ndchorley/scipy,gdooper/scipy,larsmans/scipy,juliantaylor/scipy,vigna/scipy,jjhelmus/scipy,kleskjr/scipy,maciejkula/scipy,zaxliu/scipy,minhlongdo/scipy,ndchorley/scipy,giorgiop/scipy,newemailjdm/scipy,mortada/scipy,Newman101/scipy,vhaasteren/scipy,jonycgn/scipy,njwilson23/scipy,mgaitan/scipy,haudren/scipy,larsmans/scipy,mtrbean/scipy,andim/scipy,arokem/scipy,WarrenWeckesser/scipy,jor-/scipy,woodscn/scipy,grlee77/scipy,mortada/scipy,aarchiba/scipy,witcxc/scipy,mikebenfield/scipy,gef756/scipy,ogrisel/scipy,raoulbq/scipy,Srisai85/scipy,gdooper/scipy,vanpact/scipy,matthew-brett/scipy,rgommers/scipy,perimosocordiae/scipy,behzadnouri/scipy,gef756/scipy,surhudm/scipy,kleskjr/scipy,sargas/scipy,FRidh/scipy,witcxc/scipy,mtrbean/scipy,petebachant/scipy,petebachant/scipy,e-q/scipy,gertingold/scipy,teoliphant/scipy,felipebetancur/scipy,sriki18/scipy,kleskjr/scipy,cpaulik/scipy,woodscn/scipy,hainm/scipy,lhilt/scipy,behzadnouri/scipy,mtrbean/scipy,behzadnouri/scipy,niknow/scipy,andyfaff/scipy,mdhaber/scipy,Dapid/scipy,ales-erjavec/scipy,jjhelmus/scipy,gfyoung/scipy,dch312/scipy,richardotis/scipy,Dapid/scipy,newemailjdm/scipy,nmayorov/scipy,mgaitan/scipy,grlee77/scipy,ChanderG/scipy,Shaswat27/scipy,Shaswat27/scipy,mortada/scipy,mdhaber/scipy,Shaswat27/scipy,rmcgibbo/scipy,zerothi/scipy,mdhaber/scipy,zxsted/scipy,haudren/scipy,mortonjt/scipy,aman-iitj/scipy,nvoron23/scipy,trankmichael/scipy,ilayn/scipy,apbard/scipy,aarchiba/scipy,Kamp9/scipy,dch312/scipy,Kamp9/scipy,fernand/scipy,maciejkula/scipy,WillieMaddox/scipy,vanpact/scipy,mgaitan/scipy,jamestwebber/scipy,efiring/scipy,jjhelmus/scipy,chatcannon/scipy,ales-erjavec/scipy,vhaasteren/scipy,raoulbq/scipy,pschella/scipy,lukauskas/scipy,pnedunuri/scipy,matthew-brett/scipy,perimosocordiae/scipy,aman-iitj/scipy,minhlongdo/scipy,nmayorov/scipy,behzadnouri/scipy,gertingold/scipy,Shaswat27/scipy,sauliusl/scipy,raoulbq/scipy,juliantaylor/scipy,jseabold/scipy,sonnyhu/scipy,vberaudi/scipy,jsilter/scipy,WarrenWeckesser/scipy,piyush0609/scipy,Stefan-Endres/scipy,lhilt/scipy,scipy/scipy,raoulbq/scipy,person142/scipy,ndchorley/scipy,lhilt/scipy,arokem/scipy,aman-iitj/scipy,andyfaff/scipy,vberaudi/scipy,person142/scipy,pschella/scipy,maniteja123/scipy,apbard/scipy,Newman101/scipy,grlee77/scipy,Newman101/scipy,vanpact/scipy,mhogg/scipy,anntzer/scipy,gertingold/scipy,aeklant/scipy,Newman101/scipy,zerothi/scipy,petebachant/scipy,maniteja123/scipy,maniteja123/scipy,Eric89GXL/scipy,arokem/scipy,teoliphant/scipy,matthewalbani/scipy,ogrisel/scipy,argriffing/scipy,Dapid/scipy,mdhaber/scipy,mdhaber/scipy,vigna/scipy,andyfaff/scipy,e-q/scipy,zerothi/scipy,jor-/scipy,ChanderG/scipy,endolith/scipy,larsmans/scipy,mtrbean/scipy,aman-iitj/scipy,ChanderG/scipy,chatcannon/scipy,matthewalbani/scipy,newemailjdm/scipy,anntzer/scipy,dominicelse/scipy,ortylp/scipy,FRidh/scipy,gfyoung/scipy,dominicelse/scipy,mortada/scipy,jakevdp/scipy,rgommers/scipy,maniteja123/scipy,jseabold/scipy,hainm/scipy,jakevdp/scipy,chatcannon/scipy,mtrbean/scipy,scipy/scipy,fernand/scipy,mikebenfield/scipy,raoulbq/scipy,fredrikw/scipy,aeklant/scipy,anntzer/scipy,cpaulik/scipy,Srisai85/scipy,tylerjereddy/scipy,ChanderG/scipy,vberaudi/scipy,lhilt/scipy,ortylp/scipy,Eric89GXL/scipy,piyush0609/scipy,kalvdans/scipy,bkendzior/scipy,jseabold/scipy,person142/scipy,ilayn/scipy,andim/scipy,zxsted/scipy,pbrod/scipy,jonycgn/scipy,perimosocordiae/scipy,ortylp/scipy,pbrod/scipy,matthewalbani/scipy,mingwpy/scipy,ortylp/scipy,woodscn/scipy,ilayn/scipy,zerothi/scipy,woodscn/scipy,Eric89GXL/scipy,WarrenWeckesser/scipy,minhlongdo/scipy,gef756/scipy,rmcgibbo/scipy,rmcgibbo/scipy,mgaitan/scipy,felipebetancur/scipy,mingwpy/scipy,trankmichael/scipy,pyramania/scipy,jakevdp/scipy,vanpact/scipy,lhilt/scipy,felipebetancur/scipy,josephcslater/scipy,befelix/scipy,jonycgn/scipy