@article{ISU_2009_9_3_a12,
     author = {E. V. Khvorostukhina},
     title = {On homomorphisms of endomorphism semigroups of hypergraphs},
     journal = {Izvestiya of Saratov University. Mathematics. Mechanics. Informatics},
     pages = {70--75},
     publisher = {mathdoc},
     volume = {9},
     number = {3},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ISU_2009_9_3_a12/}
}