@article{DAN_1957_113_2_a18,
     author = {V. N. Roginskii},
     title = {Equivalent transformations of relay circuits of class~$\mathrm P$},
     journal = {Doklady Akademii Nauk},
     pages = {328--331},
     publisher = {mathdoc},
     volume = {113},
     number = {2},
     year = {1957},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1957_113_2_a18/}
}