@article{GDZPPN001185845,
title = {A comparison theorem for a piecewise Lipschitz continuous Hamiltonian and application to Shape-from-Shading problems.},
journal = {Numerische Mathematik},
volume = {63},
year = {1992},
pages = {75-86},
zbl = {0762.65087},
url = {http://dml.mathdoc.fr/item/GDZPPN001185845}
}
Tourin, Agnès. A comparison theorem for a piecewise Lipschitz continuous Hamiltonian and application to Shape-from-Shading problems.. Numerische Mathematik, Tome 63 (1992) pp. 75-86. http://gdmltest.u-ga.fr/item/GDZPPN001185845/