"Geometry and topology of submanifolds 10, differential geometry in honor of prof. S. S. Chern [Shiing-Shen Chern], Peking university, China, 29 aug - 3 sept 1999 ; TU Berlin, Germany, 26 - 28 nov 1999" - читать интересную книгу автора (Chen W.H., Wang C.P. (eds.) )