1. Buckingham, E.: On Physically Similar Systems: Illustrations of the Use of Dimensional Equations. Phys. Rev. 4, No. 4, 345 (1914).
2. Bridgman, P. W.: Dimensional Analysis, p. 43. Yale Univ. Press 1922. — Langhaar, H. L.: Dimensional Analysis and Theory of Models, chap. 4. Wiley 1951.
3. Bridgman, P. W.: Op. cit. Dimensional Analysis, Yale Univ. Press 1922 p. 38.
4. Langhaar, H. L.: Op. cit. Dimensional Analysis and Theory of Models, chap. 4. Wiley 1951, p. 56.
5. Drobot, S.: On the Foundations of Dimensional Analysis. Studia Mathematica 14, fasc. 1, 84–99 (1953).