Template:Benevieri&Furi1998
From Manifold Atlas
T. P. Benevieri and M. Furi, A simple notion of orientability for Fredholm maps of index zero between Banach manifolds and degree theory, Ann. Sci. Math. Québec 22 (1998), 131-148. MR1677235 (2000a:58024) Zbl 1058.58502