@article{GDZPPN001171364, title = {Finite Element Convergence for Singular Data.}, journal = {Numerische Mathematik}, volume = {21}, year = {1973}, pages = {317-327}, zbl = {0255.65037}, url = {http://dml.mathdoc.fr/item/GDZPPN001171364} }
Scott, Ridgway. Finite Element Convergence for Singular Data.. Numerische Mathematik, Tome 21 (1973) pp. 317-327. http://gdmltest.u-ga.fr/item/GDZPPN001171364/