@article{TM_2019_307_a7,
     author = {Viacheslav V. Nikulin},
     title = {Classification of {Degenerations} and {Picard} {Lattices} of {K\"ahlerian} {K3} {Surfaces} with {Symplectic} {Automorphism} {Group} $C_4$},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {148--179},
     publisher = {mathdoc},
     volume = {307},
     year = {2019},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_2019_307_a7/}
}