%0 Journal Article %A B. Rokowska %T Some new constructions of 4-tuple systems %J Colloquium Mathematicum %D 1967 %P 111-121 %V 17 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-17-1-111-121/ %R 10.4064/cm-17-1-111-121 %G en %F 10_4064_cm_17_1_111_121