Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{NUMA_1962__4_131511, author = {H. SCHNEIDER and W.G. STRANG}, title = {Comparison theorems for supremum norms.}, journal = {Numerische Mathematik}, pages = {15--20}, publisher = {mathdoc}, volume = {4}, year = {1962}, zbl = {0103.33103}, url = {http://geodesic.mathdoc.fr/item/NUMA_1962__4_131511/} }
H. SCHNEIDER; W.G. STRANG. Comparison theorems for supremum norms.. Numerische Mathematik, Tome 4 (1962), pp. 15-20. http://geodesic.mathdoc.fr/item/NUMA_1962__4_131511/