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@article{TRSPY_1965_76_a4, author = {V. A. Zalgaller}, title = {Curves on a~surface near a~point of the spike type}, journal = {Informatics and Automation}, pages = {64--66}, publisher = {mathdoc}, volume = {76}, year = {1965}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/TRSPY_1965_76_a4/} }
V. A. Zalgaller. Curves on a~surface near a~point of the spike type. Informatics and Automation, Two-dimensional manifolds of bounded curvature. Part II. Collection of articles on the intrinsic geometry of surfaces, Tome 76 (1965), pp. 64-66. http://geodesic.mathdoc.fr/item/TRSPY_1965_76_a4/