@article{DAN_1958_120_1_a13,
     author = {M. V. Maslennikov},
     title = {On {Wick's} problem},
     journal = {Doklady Akademii Nauk},
     pages = {59--62},
     year = {1958},
     volume = {120},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1958_120_1_a13/}
}