%0 Journal Article %A K. H. Kamps %A T. Porter %T A homotopy $2$-groupoid from a fibration %J Homology, homotopy, and applications %D 1999 %P 79-93 %V 1 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4310/HHA.1999.v1.n1.a2/ %R 10.4310/HHA.1999.v1.n1.a2 %G en %F HHA_1999_1_1_a2