@article {Aschwanden2012, title = {{An enthalpy formulation for glaciers and ice sheets}}, journal = {J. Glaciol.}, volume = {58}, number = {209}, year = {2012}, pages = {441{\textendash}457}, doi = {10.3189/2012JoG11J088}, author = {Andy Aschwanden and E. Bueler and Constantine Khroulev and Blatter, H.} }