Add a reference to the regularized incomplete beta definition in  betainc docstring.
Add a reference to the regularized incomplete beta definition in  betainc docstring.

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