@article{PDM_2014_3_a0,
     author = {E. A. Bondar},
     title = {On the regularity of some subsemigroups of equivalence relation's endomorphism monoid},
     journal = {Prikladna\^a diskretna\^a matematika},
     pages = {5--11},
     publisher = {mathdoc},
     number = {3},
     year = {2014},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/PDM_2014_3_a0/}
}