ON STRUCTURE OF THE ROTATING SKYRMION Статья Rybakov Yu.P. Solitons and applications (Dubna, 1989). World Sci. Publ., River Edge, NJ. 1990. С. 421-424
ON THE INFINITESIMAL THEORY OF SMOOTH HYPOREDUCTIVE LOOPS Статья Sabinin L.V. Webs and quasigroups (Russian). Kalinin. Gos. Univ., Kalinin. 1990. С. 33-39