1. A. Akivis and V. Goldberg, Projective Differential Geometry of Submanifolds, North-Holland, Amsterdam (1993).
2. P. O. Bell, “Generalized theorems of Desargues for n-dimensional projective space,” Proc. Am. Math. Soc., No. 6, 675–681 (1955).
3. O. O. Belova, “Connections in bundles associated with the Grassmann manifolds and the space of centered planes,” Fundam. Prikl. Mat., 14, No. 2, 29–67 (2008).
4. M. Berger, Géométrie, CEDIC / Nathan, Paris (1977).
5. E. Cartan, La théorie de groupes finis et continus et la géométrie différentielle traitées par la méthode di repère mobile, Gauthier-Villars, Paris (1937).