@article{ZVMMF_2002_42_12_a16,
     author = {M. B. Aidarkhanov and L. L. La},
     title = {Some properties of fuzzy classifications},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {1908--1913},
     year = {2002},
     volume = {42},
     number = {12},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_2002_42_12_a16/}
}