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@article{FAA_1976_10_1_a4, author = {V. M. Zakalyukin}, title = {Lagrangian and {Legendrian} singularities}, journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a}, pages = {26--36}, publisher = {mathdoc}, volume = {10}, number = {1}, year = {1976}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/FAA_1976_10_1_a4/} }
V. M. Zakalyukin. Lagrangian and Legendrian singularities. Funkcionalʹnyj analiz i ego priloženiâ, Tome 10 (1976) no. 1, pp. 26-36. http://geodesic.mathdoc.fr/item/FAA_1976_10_1_a4/