%0 Journal Article %A Plesník, Ján %T On the computational complexity of centers locating in a graph %J Applications of Mathematics %D 1980 %P 445-452 %V 25 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/AM.1980.103883/ %R 10.21136/AM.1980.103883 %G en %F 10_21136_AM_1980_103883