TY - JOUR AU - P. A. Kuchment TI - Singularities of the boundary of the stability region in the infinite-dimensional case JO - Funkcionalʹnyj analiz i ego priloženiâ PY - 1988 SP - 75 EP - 76 VL - 22 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/FAA_1988_22_3_a9/ LA - ru ID - FAA_1988_22_3_a9 ER -