%0 Journal Article %A Zelinka, Bohdan %T Join graphs of trees %J Czechoslovak Mathematical Journal %D 1980 %P 332-335 %V 30 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1980.101681/ %R 10.21136/CMJ.1980.101681 %G en %F 10_21136_CMJ_1980_101681