1. R. Aris, Vectors, Tensors, and the Basic Equations of Fluid Mechanics (Prentice-Hall, NJ, 1962)
2. G.K. Batchelor, An Introduction to Fluid Dynamics, Appendix 2 (Cambridge University Press, UK, 2000)
3. W.E. Langlois, M.O. Deville, Slow Viscous Flow, 2nd Ed, Chapter 3, (Springer, NY, 2014)
4. P.M. Morse, H. Feshbach, Methods of Theoretical Physics, Chapter 1 (McGraw-Hill, NY, 1953)
5. I.S. Sokolnikoff, Tensor Analysis: Theory and Applications to Geometry and Mechanics of Continua, 2nd Ed. (Wiley, NY 1964)