@article{DAN_1977_236_6_a9,
     author = {A. N. Suprun},
     title = {Methods of extending the class of operators of the theory of viscoelasticity},
     journal = {Doklady Akademii Nauk},
     pages = {1323--1326},
     publisher = {mathdoc},
     volume = {236},
     number = {6},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1977_236_6_a9/}
}