%0 Journal Article
%A Philip R. Heath
%T Groupoid Operations and Fibre-Homotopy Equivalence. I.
%J Mathematische Zeitschrift
%D 1973
%P 207-234
%V 130
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZ_1973__130_171863/
%F MZ_1973__130_171863