Capítulo 1 do livro Introdução à Análise Funcional, colecção Textos de Matemática do DM. Capítulos 1, 2, e 4 de Foundations of Differentiable Manifolds and Lie Groups, Graduate Texts in Mathematics, de Frank W. Warner, à excepção do Teorema de Frobenius. Elementary Differential Geometry, Elsevier, de Barret O´Neill Capítulo 4 de Foundations of Differentiable Manifolds and Lie Groups, Graduate Texts in Mathematics, de Frank W. Warner. Algebraic Curves: An Introduction to Algebraic Geometry, Addison-Wesley, de William Fulton. Algebraic Topology: a first course, Springer-Verlag, de William Fulton. 4) :