@article{GDZPPN001181327,
title = {Lower Norm Estimates for Approximate Solutions of Differential Equations with Non-Smooth Coefficients.},
journal = {Numerische Mathematik},
volume = {55},
year = {1987},
pages = {303-322},
zbl = {0613.65087},
url = {http://dml.mathdoc.fr/item/GDZPPN001181327}
}
Banerjee, U. Lower Norm Estimates for Approximate Solutions of Differential Equations with Non-Smooth Coefficients.. Numerische Mathematik, Tome 55 (1987) pp. 303-322. http://gdmltest.u-ga.fr/item/GDZPPN001181327/