TY - JOUR AU - M. N. Yakovlev TI - Implicit functions determined by equations with unbounded operators and the solvability of operator equations JO - Zapiski Nauchnykh Seminarov POMI PY - 1998 SP - 216 EP - 224 VL - 248 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ZNSL_1998_248_a10/ LA - ru ID - ZNSL_1998_248_a10 ER -