%0 Journal Article
%A Nieminen, U. J.
%T The block plan problem. A graphtheoretic approach
%J Kybernetika
%D 1973
%P 365-373
%V 9
%N 5
%U http://geodesic.mathdoc.fr/item/KYB_1973_9_5_a3/
%G en
%F KYB_1973_9_5_a3