@article{IVM_2011_5_a9,
     author = {D. S. Biserov and K. B. Igudesman},
     title = {Matrices over a~semiring of binary relations and $V$-variable fractals},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {75--79},
     publisher = {mathdoc},
     number = {5},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2011_5_a9/}
}