@article{IIMI_2007_1_a0,
     author = {N. I. Kalyadin},
     title = {Constructivisation of the models of classification of finite objects},
     journal = {Izvestiya Instituta Matematiki i Informatiki Udmurtskogo Gosudarstvennogo Universiteta},
     pages = {3--231},
     year = {2007},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IIMI_2007_1_a0/}
}