@article{MZM_1990_47_3_a5,
     author = {G. A. Derfel' and S. A. Molchanov},
     title = {Spectral methods in the theory of differential-functional equations},
     journal = {Matemati\v{c}eskie zametki},
     pages = {42--51},
     publisher = {mathdoc},
     volume = {47},
     number = {3},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1990_47_3_a5/}
}