@article{DAN_1976_226_3_a5,
     author = {V. L. Matrosov},
     title = {Complexity classes and classes of computable signaling functions},
     journal = {Doklady Akademii Nauk},
     pages = {513--515},
     publisher = {mathdoc},
     volume = {226},
     number = {3},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1976_226_3_a5/}
}