Huvudgrupp 1

• Bott, Raoul; Tu, Loring W., Differential forms in algebraic topology, New York, Springer, cop. 1982Obligatorisk*
• Milnor, John Willard; Weaver, David W., Topology from the differentiable viewpoint, Rev. ed., Princeton, N.J. ; a Chichester, Princeton Univ. Press, 1997Obligatorisk*

* Obligatorisk