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@article{FAA_1997_31_2_a14, author = {B. Z. Shapiro}, title = {Normal {Forms} of the {Whitney} {Umbrella} with {Respect} to the {Contact} {Group} {Preserving} a {Cone}}, journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a}, pages = {91--94}, publisher = {mathdoc}, volume = {31}, number = {2}, year = {1997}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/FAA_1997_31_2_a14/} }
TY - JOUR AU - B. Z. Shapiro TI - Normal Forms of the Whitney Umbrella with Respect to the Contact Group Preserving a Cone JO - Funkcionalʹnyj analiz i ego priloženiâ PY - 1997 SP - 91 EP - 94 VL - 31 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/FAA_1997_31_2_a14/ LA - ru ID - FAA_1997_31_2_a14 ER -
B. Z. Shapiro. Normal Forms of the Whitney Umbrella with Respect to the Contact Group Preserving a Cone. Funkcionalʹnyj analiz i ego priloženiâ, Tome 31 (1997) no. 2, pp. 91-94. http://geodesic.mathdoc.fr/item/FAA_1997_31_2_a14/