TY - JOUR AU - Sergiy Zhuk AU - Olexander Nakonechnii TI - Minimax state estimates for abstract Neumann problems JO - Minimax theory and its applications PY - 2018 VL - 3 IS - 1 UR - http://geodesic.mathdoc.fr/item/MTA_2018_3_1_a5/ ID - MTA_2018_3_1_a5 ER -