@article{PDMA_2015_8_a5,
     author = {B. A. Pogorelov and M. A. Pudovkina},
     title = {$\otimes_{\mathbf W,\mathrm{ch}}$-markovian transformations},
     journal = {Prikladnaya Diskretnaya Matematika. Supplement},
     pages = {17--19},
     publisher = {mathdoc},
     number = {8},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/PDMA_2015_8_a5/}
}