Rosenberger G, Stille M, Fine B. Conjugacy pinched and cyclically pinched one-relator groups. Rev. mat. complut. [Internet]. 1997 Jan. 1 [cited 2026 Jul. 29];10(2):207. Available from: https://revistas.ucm.es/index.php/REMA/article/view/REMA9797230207A