@article{VUU_2006_1_a12,
     author = {V. A. Belousov and N. I. Kalyadin},
     title = {To the question of existence of simultaneous models of classification of objects},
     journal = {Vestnik Udmurtskogo universiteta. Matematika, mehanika, kompʹ\^uternye nauki},
     pages = {151--160},
     publisher = {mathdoc},
     number = {1},
     year = {2006},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VUU_2006_1_a12/}
}