TY - JOUR AU - V. A. Kleptsyn AU - M. B. Nalsky TI - Stability of Existence of Nonhyperbolic Measures for $C^1$-Diffeomorphisms JO - Funkcionalʹnyj analiz i ego priloženiâ PY - 2007 SP - 30 EP - 45 VL - 41 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/FAA_2007_41_4_a2/ LA - ru ID - FAA_2007_41_4_a2 ER -