@article{ISU_2015_15_1_a15,
     author = {V. A. Molchanov},
     title = {Abstract characterization of semigroups of input signals of universal planar automata},
     journal = {Izvestiya of Saratov University. Mathematics. Mechanics. Informatics},
     pages = {113--121},
     publisher = {mathdoc},
     volume = {15},
     number = {1},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ISU_2015_15_1_a15/}
}