Bibliografia
Principal
- J. Rotman
(1991)
An Introduction to Algebraic Topology
J. Rotman, An Introduction to Algebraic Topology, Springer Graduate Texts in Mathematics (1991)
- J. Milnor
(1963)
Morse Theory
J. Milnor, Morse Theory, Princeton University Press (1963)
- I. Madsen and J. Tornehave
(1997)
From Calculus to Cohomology
I. Madsen & J. Tornehave, From Calculus to Cohomology, Cambridge U. P (1997)
Secundária
- R. Bott and L. Tu
(1982)
Differential Forms in Algebraic Topology
R. Bott & L. Tu, Differential Forms in Algebraic Topology, Springer GTM 82, (1982)