%0 Journal Article %A Poll, Erik %T A coalgebraic semantics of subtyping %J RAIRO. Theoretical Informatics and Applications %D 2001 %P 61-81 %V 35 %N 1 %I EDP-Sciences %U https://www.numdam.org/item/ITA_2001__35_1_61_0/ %G en %F ITA_2001__35_1_61_0