@ARTICLE{s2017pmp, author = {M. Schedensack}, title = {A new generalization of the ${P}_1$ non-conforming {FEM} to higher polynomial degrees}, journal = {Comput. Methods Appl. Math.}, volume = {17}, number = {1}, pages = {161--185}, year = {2017}, doi = {10.1515/cmam-2016-0031}, }