
1 - Der Ricci-Kalkül : Eine Einfürhrung in die neueren Methoden und Probleme der mehrdimensionalen Differentialgeometrie |
2 - Pfaff's problem and its generalizations |
3 - Ricci-calculus : an introduction to tensor analysis and its geometrical applications - Second edition |
4 - Tensor analysis for physicists - Second edition |