@article{GDZPPN00117410X,
title = {A Stable Interior Penalty Method for Convex Extremal Problems.},
journal = {Numerische Mathematik},
volume = {28},
year = {1977},
pages = {149-158},
zbl = {0368.90114},
url = {http://dml.mathdoc.fr/item/GDZPPN00117410X}
}
Hartung, J. A Stable Interior Penalty Method for Convex Extremal Problems.. Numerische Mathematik, Tome 28 (1977) pp. 149-158. http://gdmltest.u-ga.fr/item/GDZPPN00117410X/