@article{DA_2013_20_2_a3,
     author = {A. V. Kel'manov and A. V. Pyatkin},
     title = {On the complexity of some vector sequence clustering problems},
     journal = {Diskretnyj analiz i issledovanie operacij},
     pages = {47--57},
     publisher = {mathdoc},
     volume = {20},
     number = {2},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DA_2013_20_2_a3/}
}