%0 Journal Article %A A. V. Kel'manov %A A. V. Pyatkin %A V. I. Khandeev %T Quadratic Euclidean 1-Mean and 1-Median 2-Clustering Problem with Constraints on the Size of the Clusters: Complexity and Approximability %J Trudy Instituta matematiki i mehaniki %D 2019 %P 69-78 %V 25 %N 4 %U http://geodesic.mathdoc.fr/item/TIMM_2019_25_4_a6/ %G ru %F TIMM_2019_25_4_a6