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2. Y. Choquet-Bruhat, C. De Witt-Morelle, M. Dillard-Bleick, Analysis, Manifolds and Physics, North-Holland 1978.
3. G. von Westenholz, Differential Forms in Mathematical Physics, North-Holland 1978.
4. R. Abraham, J.E. Marsden, Foundations of Mechanics, Second Edition, Benjamin 1978.