Посилання:Basic properties and applications of graded fractal bundles related to Clifford structures: An introduction / J. Ławrynowicz, O. Suzuki, F.L. Castillo Alvarado // Український математичний журнал. — 2008. — Т. 60, № 5. — С. 603–618. — Бібліогр.: 39 назв. — англ.
Підтримка:Research of the first author partially supported by the State Committee for Scientific Research grant PB1 P03A 03 27 (Sections 2 and 3 of the paper), and partially by the grant of the
University of Ł´od´z no. 505/693 (Sections 1 and 4). Research of the third author supported by
CONACYT, Becario de COFAA-IPN.