1. “Applications of Tensor Analysis”;McConnell,1957
2. “Tensor Calculus,” 2nd ed.;Spain,1956
3. “Tensor analysis for physicists”;Schouten,1951
4. “Ricci Calculus,” 2nd ed.;Schouten,1954
5. Die Arten der Unstetigkeiten des Windfeldes an der Tropopause;Ertel;Meteorol. Z.,1936