%0 Journal Article %A A.M. Cegarra %A B.A. Heredia %A J.Remedios %T Bicategorical homotopy pullbacks %J Theory and applications of categories %D 2015 %P 147-205 %V 30 %I mathdoc %U http://geodesic.mathdoc.fr/item/TAC_2015_30_a5/ %G en %F TAC_2015_30_a5