@article{ZNSL_2012_402_a5,
     author = {Yu. I. Zaks and E. S. Skvortsov},
     title = {Synchronizing random automata on $4$-letter alphabet},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {83--90},
     publisher = {mathdoc},
     volume = {402},
     year = {2012},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2012_402_a5/}
}