TY - JOUR AU - Boris A. Rosenfeld TI - Differentiable functions in associative and alternative algebras and smooth surfaces in projective spaces over these algebras JO - Publications de l 'Institut Mathématique PY - 2000 SP - 67 VL - 2000 IS - 88 PB - mathdoc UR - https://geodesic-test.mathdoc.fr/item/PUIM_2000__2000_88_258138/ LA - en ID - PUIM_2000__2000_88_258138 ER -