@article{1214429784,
author = {Heinz, Erhard},
title = {Interior gradient estimates for surface $z=f(x,\,y)$ with prescribed mean curvature},
journal = {J. Differential Geom.},
volume = {6},
number = {1},
year = {1971},
pages = { 149-157},
language = {en},
url = {http://dml.mathdoc.fr/item/1214429784}
}
Heinz, Erhard. Interior gradient estimates for surface $z=f(x,\,y)$ with prescribed mean curvature. J. Differential Geom., Tome 6 (1971) no. 1, pp. 149-157. http://gdmltest.u-ga.fr/item/1214429784/