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@article{TM_1965_76_a10, author = {I. Ya. Bakelman}, title = {Chebyshev networks in manifolds of bounded curvature}, journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova}, pages = {124--129}, publisher = {mathdoc}, volume = {76}, year = {1965}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/TM_1965_76_a10/} }
I. Ya. Bakelman. Chebyshev networks in manifolds of bounded curvature. Trudy Matematicheskogo Instituta imeni V.A. Steklova, Two-dimensional manifolds of bounded curvature. Part II. Collection of articles on the intrinsic geometry of surfaces, Tome 76 (1965), pp. 124-129. http://geodesic.mathdoc.fr/item/TM_1965_76_a10/