@article{MZM_1970_8_2_a15,
     author = {V. S. Vladimirov},
     title = {A note concerning passive linear systems},
     journal = {Matemati\v{c}eskie zametki},
     pages = {265--271},
     publisher = {mathdoc},
     volume = {8},
     number = {2},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1970_8_2_a15/}
}