@article{TIMM_2019_25_4_a6,
     author = {A. V. Kel'manov and A. V. Pyatkin and V. I. Khandeev},
     title = {Quadratic {Euclidean} {1-Mean} and {1-Median} {2-Clustering} {Problem} with {Constraints} on the {Size} of the {Clusters:} {Complexity} and {Approximability}},
     journal = {Trudy Instituta matematiki i mehaniki},
     pages = {69--78},
     year = {2019},
     volume = {25},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TIMM_2019_25_4_a6/}
}