1. Variation of flow quantities along streamlines and their principal normals and binormals in three-dimensional gas flows;Kanwal, R. P.;J. Math. Mech.,1957
2. International Series of Monographs on Physics;Chandrasekhar, S.,1961
3. Intrinsic relations satisfied by the vorticity and velocity vectors in fluid flow theory;Coburn, N.;Michigan Math. J.,1952
4. C. E. Weatherburn, Differential geometry of three dimensions. Vol. I, p. 15, Cambridge Univ. Press, Cambridge, 1955.
5. International Series of Monographs on Physics;Chandrasekhar, S.,1961