Cegla, W.J.  1986-89 Scholar Born 1949 Wroclaw, Poland. D.Sc. 1981 Wroclaw. Appointments: Assistant, Wroclaw 1973-81; Lect., Wroclaw 1982-86; Assist. Prof., Wroclaw 1989-. Memberships: Polish Physical Society; Polish Mathematical Society; International Association of Mathematical Physics. Address: Institute of Theoretical Physics, University of Wroclaw, 50-204 Wroclaw, Poland. E-mail: iftuwr_at_plwruw11