%0 Journal Article %A Velickovic, Boban %T CCC posets of perfect trees %J Compositio Mathematica %D 1991 %P 279-294 %V 79 %N 3 %I Kluwer Academic Publishers %U http://www.numdam.org/item/CM_1991__79_3_279_0/ %G en %F CM_1991__79_3_279_0