Minimal Surfaces in Manifolds with S 1 Actions and the Simple Loop Conjecture for Seifert Fibered Spaces
Joel Hass · Proceedings of the American Mathematical Society · 1987
Joel Hass, Minimal Surfaces in Manifolds with S1 Actions and the Simple Loop Conjecture for Seifert Fibered Spaces, Proceedings of the American Mathematical Society, Vol. 99, No. 2 (Feb., 1987), pp. 383-388