1. Callen, H. B., Thermodynamics. New York: Wiley 1960.
2. Pippard, A. B., Elements of Classical Thermodynamics. Cambridge: University Press 1960.
3. Penfield, P., & H. A. Haus, Electrodynamics of Moving Media. Cambridge, Mass.: M.I.T. Press 1967.
4. Yano, K., The Theory of Lie Derivatives and its Applications. Amsterdam: North-Holland Publ. Co. 1955.
5. Schouten, J. A., Ricci-Calculus. An Introduction to Tensor Analysis and its Geometrical Applications. 2nd. edn. Berlin: Springer-Verlag 1954.