%0 Journal Article %A De Luca, Aldo %T On some properties of the syntactic semigroup of a very pure subsemigroup %J RAIRO. Informatique théorique %D 1980 %P 39-56 %V 14 %N 1 %I EDP-Sciences %U http://www.numdam.org/item/ITA_1980__14_1_39_0/ %G en %F ITA_1980__14_1_39_0