@article{DAN_1967_174_2_a6,
     author = {G. Ya. Lyubarskii},
     title = {An equation of parabolic type with periodic coefficients},
     journal = {Doklady Akademii Nauk},
     pages = {283--286},
     publisher = {mathdoc},
     volume = {174},
     number = {2},
     year = {1967},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1967_174_2_a6/}
}