TY - JOUR AU - V. Yu. Ovsienko TI - Projective Structures and Contact Forms JO - Funkcionalʹnyj analiz i ego priloženiâ PY - 1994 SP - 47 EP - 60 VL - 28 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/FAA_1994_28_3_a3/ LA - ru ID - FAA_1994_28_3_a3 ER -