1. B. A. Rozenfeld, Multidimensional Spaces (Nauka, Moscow, 1966) [in Russian].
2. L. P. Eisenhart, Riemannian Geometry (Princeton Univ. Press, Princeton, 1997).
3. G. B. Gurevich, Foundations of the Theory of Algebraic Invariants (Noordhoff, Groningen, 1964).
4. J. L. Synge and A. Schild, Tensor Calculus (Dover, New York, 1978).
5. J. A. Schouten, Tensor Analysis for Physicist (Clarendon Press, Oxford, 1951).