TY - JOUR AU - Viacheslav V. Nikulin TI - Classification of Degenerations and Picard Lattices of Kählerian K3 Surfaces with Symplectic Automorphism Group $C_4$ JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 2019 SP - 148 EP - 179 VL - 307 UR - http://geodesic.mathdoc.fr/item/TM_2019_307_a7/ LA - ru ID - TM_2019_307_a7 ER -