EXACT SOLUTIONS FOR (2 + 1)-DIMENSIONAL COS-GORDON NONLINEAR PARTIAL DIFFERENTIAL EQUATION USING JACOBI ELLIPTIC FUNCTIONS. Far East Journal of Mathematical Sciences (FJMS), [S. l.], v. 143, n. 1, p. 1–9, 2025. DOI: 10.17654/0972087126001. Disponível em: https://pphmjopenaccess.com/fejms/article/view/3589. Acesso em: 5 jan. 2026.