@article{1270141807,
author = {NAKAMURA, Gen},
title = {Local Isometric Embedding of Two Dimensional Riemannian Manifolds into $\mathbf{R}^3$ with Nonpositive Gaussian Curvature},
journal = {Tokyo J. of Math.},
volume = {10},
number = {2},
year = {1987},
pages = { 241-257},
language = {en},
url = {http://dml.mathdoc.fr/item/1270141807}
}
NAKAMURA, Gen. Local Isometric Embedding of Two Dimensional Riemannian Manifolds into $\mathbf{R}^3$ with Nonpositive Gaussian Curvature. Tokyo J. of Math., Tome 10 (1987) no. 2, pp. 241-257. http://gdmltest.u-ga.fr/item/1270141807/