%0 Journal Article %A Artem V Pyatkin %T 1-mean and 1-medoid 2-clustering problem with arbitrary cluster sizes: complexity and approximation %J Yugoslav journal of operations research %D 2023 %P 59 %V 33 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/YJOR_2023_33_1_a3/ %G en %F YJOR_2023_33_1_a3