@article{DAN_1961_139_4_a16,
     author = {Ya. Z. Tsypkin},
     title = {The theory of pulse automatic systems with amplitude-pulse modulation of the second kind},
     journal = {Doklady Akademii Nauk},
     pages = {834--837},
     publisher = {mathdoc},
     volume = {139},
     number = {4},
     year = {1961},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1961_139_4_a16/}
}