Voir la notice de l'article provenant de la source Math-Net.Ru
@article{TRSPY_1965_76_a11, author = {A. L. Verner}, title = {A~semi-geodesic coordinate net on tubes of non-positive curvature}, journal = {Informatics and Automation}, pages = {130--140}, publisher = {mathdoc}, volume = {76}, year = {1965}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/TRSPY_1965_76_a11/} }
A. L. Verner. A~semi-geodesic coordinate net on tubes of non-positive curvature. Informatics and Automation, Two-dimensional manifolds of bounded curvature. Part II. Collection of articles on the intrinsic geometry of surfaces, Tome 76 (1965), pp. 130-140. http://geodesic.mathdoc.fr/item/TRSPY_1965_76_a11/