@article{KUIPM_1990_a9,
     author = {A. M. Sidorov},
     title = {Spectral pairs of linear problems for functional-differential equations},
     journal = {Issledovaniya po Prikladnoi Matematike i Informatike},
     pages = {114--120},
     publisher = {mathdoc},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/KUIPM_1990_a9/}
}