@article{GDZPPN001165194,
title = {Compatibility of Approximate Solution of Linear Equations with Given Error Bounds for Coefficients and Right-Hand Sides.},
journal = {Numerische Mathematik},
volume = {6},
year = {1964},
pages = {405-409},
zbl = {0133.08603},
url = {http://dml.mathdoc.fr/item/GDZPPN001165194}
}
OETTLI, W.; PRAGER, W. Compatibility of Approximate Solution of Linear Equations with Given Error Bounds for Coefficients and Right-Hand Sides.. Numerische Mathematik, Tome 6 (1964) pp. 405-409. http://gdmltest.u-ga.fr/item/GDZPPN001165194/