V., G., V., A., A., M.(1996).Conformal differential geometry and its generalization / Maks A. Akivis, Vladislav V. Goldberg .New York:John Wiley n Sons.
Gaya MLA
Goldberg, Vladislav, V.., Akivis, Maks, A.."Conformal differential geometry and its generalization / Maks A. Akivis, Vladislav V. Goldberg".New York:John Wiley n Sons,1996.Textbook.