Added Widmer 2013 reference.
Added Widmer 2013 reference.

90jrong/libmesh,hrittich/libmesh,aeslaughter/libmesh,permcody/libmesh,cahaynes/libmesh,90jrong/libmesh,benkirk/libmesh,capitalaslash/libmesh,libMesh/libmesh,Mbewu/libmesh,90jrong/libmesh,friedmud/libmesh,vikramvgarg/libmesh,capitalaslash/libmesh,jiangwen84/libmesh,BalticPinguin/libmesh,balborian/libmesh,jwpeterson/libmesh,karpeev/libmesh,vikramvgarg/libmesh,dmcdougall/libmesh,benkirk/libmesh,markcmiller86/libmesh_silo,dschwen/libmesh,jwpeterson/libmesh,vikramvgarg/libmesh,balborian/libmesh,jiangwen84/libmesh,Mbewu/libmesh,giorgiobornia/libmesh,svallaghe/libmesh,hrittich/libmesh,BalticPinguin/libmesh,balborian/libmesh,cahaynes/libmesh,markcmiller86/libmesh_silo,vikramvgarg/libmesh,friedmud/libmesh,aeslaughter/libmesh,giorgiobornia/libmesh,roystgnr/libmesh,jwpeterson/libmesh,cahaynes/libmesh,dknez/libmesh,benkirk/libmesh,jiangwen84/libmesh,dschwen/libmesh,dmcdougall/libmesh,hrittich/libmesh,friedmud/libmesh,giorgiobornia/libmesh,capitalaslash/libmesh,capitalaslash/libmesh,salazardetroya/libmesh,90jrong/libmesh,90jrong/libmesh,roystgnr/libmesh,dmcdougall/libmesh,karpeev/libmesh,balborian/libmesh,balborian/libmesh,dschwen/libmesh,capitalaslash/libmesh,pbauman/libmesh,cahaynes/libmesh,coreymbryant/libmesh,dknez/libmesh,dschwen/libmesh,pbauman/libmesh,karpeev/libmesh,90jrong/libmesh,aeslaughter/libmesh,BalticPinguin/libmesh,hrittich/libmesh,benkirk/libmesh,coreymbryant/libmesh,svallaghe/libmesh,giorgiobornia/libmesh,capitalaslash/libmesh,jiangwen84/libmesh,jwpeterson/libmesh,pbauman/libmesh,benkirk/libmesh,coreymbryant/libmesh,aeslaughter/libmesh,jiangwen84/libmesh,salazardetroya/libmesh,dknez/libmesh,salazardetroya/libmesh,coreymbryant/libmesh,aeslaughter/libmesh,vikramvgarg/libmesh,permcody/libmesh,roystgnr/libmesh,jwpeterson/libmesh,svallaghe/libmesh,BalticPinguin/libmesh,hrittich/libmesh,Mbewu/libmesh,salazardetroya/libmesh,cahaynes/libmesh,dschwen/libmesh,markcmiller86/libmesh_silo,coreymbryant/libmesh,aeslaughter/libmesh,90jrong/libmesh,karpeev/libmesh,BalticPinguin/libmesh,90jrong/libmesh,salazardetroya/libmesh,karpeev/libmesh,giorgiobornia/libmesh,vikramvgarg/libmesh,libMesh/libmesh,Mbewu/libmesh,libMesh/libmesh,dmcdougall/libmesh,roystgnr/libmesh,libMesh/libmesh,jwpeterson/libmesh,permcody/libmesh,svallaghe/libmesh,dknez/libmesh,aeslaughter/libmesh,dmcdougall/libmesh,coreymbryant/libmesh,balborian/libmesh,friedmud/libmesh,karpeev/libmesh,benkirk/libmesh,markcmiller86/libmesh_silo,vikramvgarg/libmesh,libMesh/libmesh,coreymbryant/libmesh,coreymbryant/libmesh,Mbewu/libmesh,salazardetroya/libmesh,balborian/libmesh,pbauman/libmesh,libMesh/libmesh,libMesh/libmesh,benkirk/libmesh,cahaynes/libmesh,salazardetroya/libmesh,salazardetroya/libmesh,friedmud/libmesh,markcmiller86/libmesh_silo,benkirk/libmesh,BalticPinguin/libmesh,jwpeterson/libmesh,permcody/libmesh,svallaghe/libmesh,svallaghe/libmesh,dmcdougall/libmesh,jiangwen84/libmesh,roystgnr/libmesh,friedmud/libmesh,friedmud/libmesh,balborian/libmesh,dknez/libmesh,markcmiller86/libmesh_silo,Mbewu/libmesh,permcody/libmesh,jiangwen84/libmesh,jiangwen84/libmesh,Mbewu/libmesh,permcody/libmesh,markcmiller86/libmesh_silo,pbauman/libmesh,svallaghe/libmesh,karpeev/libmesh,cahaynes/libmesh,BalticPinguin/libmesh,giorgiobornia/libmesh,vikramvgarg/libmesh,svallaghe/libmesh,pbauman/libmesh,capitalaslash/libmesh,BalticPinguin/libmesh,capitalaslash/libmesh,balborian/libmesh,hrittich/libmesh,friedmud/libmesh,cahaynes/libmesh,dknez/libmesh,pbauman/libmesh,giorgiobornia/libmesh,hrittich/libmesh,aeslaughter/libmesh,pbauman/libmesh,dknez/libmesh,friedmud/libmesh,Mbewu/libmesh,giorgiobornia/libmesh,markcmiller86/libmesh_silo,benkirk/libmesh,vikramvgarg/libmesh,dknez/libmesh,dmcdougall/libmesh,dschwen/libmesh,libMesh/libmesh,dschwen/libmesh,hrittich/libmesh,balborian/libmesh,aeslaughter/libmesh,permcody/libmesh,roystgnr/libmesh,giorgiobornia/libmesh,permcody/libmesh,90jrong/libmesh,karpeev/libmesh,jwpeterson/libmesh,roystgnr/libmesh,dschwen/libmesh,pbauman/libmesh,roystgnr/libmesh,svallaghe/libmesh,dmcdougall/libmesh,hrittich/libmesh,Mbewu/libmesh