@article{DAN_1980_250_5_a2,
     author = {P. E. Dedik},
     title = {Almost periodic pseudodifferential operators with multiple symbols},
     journal = {Doklady Akademii Nauk},
     pages = {1040--1043},
     year = {1980},
     volume = {250},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1980_250_5_a2/}
}