Voir la notice de l'article provenant de la source Math-Net.Ru
@article{FAA_1999_33_3_a7, author = {V. M. Zakalyukin}, title = {Singularities of {Contact} with $3${-Flags}}, journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a}, pages = {78--81}, publisher = {mathdoc}, volume = {33}, number = {3}, year = {1999}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/FAA_1999_33_3_a7/} }
V. M. Zakalyukin. Singularities of Contact with $3$-Flags. Funkcionalʹnyj analiz i ego priloženiâ, Tome 33 (1999) no. 3, pp. 78-81. http://geodesic.mathdoc.fr/item/FAA_1999_33_3_a7/