%0 Journal Article %A Gliviak, Ferdinand %A Plesník, Ján %T On the Existence of Certain Graphs with Diameter Two %J Mathematica slovaca %D 1969 %P 276-282 %V 19 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/MASLO_1969__19_4_a5/ %G en %F MASLO_1969__19_4_a5