%0 Journal Article %A GRØNBÆK, NIELS %A HABIBIAN, FEREIDOUN %T BIFLATNESS AND BIPROJECTIVITY OF BANACH ALGEBRAS GRADED OVER A SEMILATTICE %J Glasgow mathematical journal %D 2010 %P 479-495 %V 52 %N 3 %U http://geodesic.mathdoc.fr/articles/10.1017/S0017089510000364/ %R 10.1017/S0017089510000364 %F 10_1017_S0017089510000364