Antonelli 2003, p. 1420; Kriegl & Michor 1997, p. 290. Lee 2002, pp.122–23 defines smooth functors over a different category, whose morphisms are linear isomorphisms rather than all linear mappings. - Antonelli, P. L. (2003), Handbook of Finsler geometry, Springer, p. 1420, ISBN 1-4020-1556-9
Kriegl & Michor 1997, p. 290 - Kriegl, Andreas; Michor, Peter W. (1997), The convenient setting of global analysis, AMS Bookstore, p. 290, ISBN 0-8218-0780-3
Kriegl & Michor 1997, p. 290 - Kriegl, Andreas; Michor, Peter W. (1997), The convenient setting of global analysis, AMS Bookstore, p. 290, ISBN 0-8218-0780-3
Kriegl & Michor 1997 have developed an infinite-dimensional theory for so-called "convenient vector spaces" – a class of locally convex spaces that includes Fréchet spaces. - Kriegl, Andreas; Michor, Peter W. (1997), The convenient setting of global analysis, AMS Bookstore, p. 290, ISBN 0-8218-0780-3