ANDRICA, Dorin; BLAGA, Petru; MOROIANU, Sergiu. MODERN TRENDS IN GEOMETRY AND TOPOLOGY: THE 7TH INTERNATIONAL WORKSHOOP ON DIFFERENTIAL GEMETRY AND ITS APPLICA-TIONS : DEVA, SEPTEMBER 5TH- SEPTEMBER 11TH, 2005. [s.l.] : Presa Universitară Clujeană,2007. Disponível em: https://editura.ubbcluj.ro/index.php/puc/catalog/book/3725. Acesso em: 18 mar. 2026.