Intrinsic clothing of a family of hyperplane elements with envelope surface of centers
... Картана в дифференциальной геометрии. М.; Л., 1948.
7. Cartan E. Lecons sur la theorie des espaces a connexion projective. Paris, 1937.
Kuleshov A.
projective space, hyperplane element, clothing, moving frame, exterior forms method
64-68