Tensor computations in computer algebra systems
  This paper considers three types of tensor computations. On their basis, we attempt to formulate criteria that must be satisfied by a computer algebra system dealing with tensors. We briefly overview the current state of tensor computations in different computer algebra systems. The tensor computations are illustrated with appropriate examples implemented in specific systems: Cadabra and Maxima. 
A. V. Korolkova, D. S. Kulyabov, L. A. Sevastyanov
cs.SC cs.MS gr-qc