John Hempel

Fundamental Groups of 3-Manifolds which are Extensions

William Jaco, W. Jaco, John Hempel, 1972 .

Residual finiteness of surface groups

John Hempel, J. Hempel, 1972 .

RESIDUAL FINITENESS FOR 3-MANIFOLDS

John Hempel, J. Hempel, 1987 .

3-Manifolds as viewed from the curve complex ☆

John Hempel, J. Hempel, 1997, math/9712220.