Bazanfaré, Mahaman. «A volume comparison theorem and number of ends for manifolds with asimptotically nonnegative Ricci curvature». Revista Matemática Complutense 13, no. 2 (janeiro 1, 2000): 399. Acedido julho 23, 2026. https://revistas.ucm.es/index.php/REMA/article/view/REMA0000220399A.