@article{DE_1965_1_12_a0,
     author = {N. N. Krasovskii},
     title = {The problem of observation of a linear dynamic system and equations with retarded argument},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1551--1556},
     publisher = {mathdoc},
     volume = {1},
     number = {12},
     year = {1965},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1965_1_12_a0/}
}