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- [4] FOX-ARTIN SPHERE AND SURFACES IN NONCOMPACT 3-MANIFOLDS QUARTERLY JOURNAL OF MATHEMATICS, 1977, 28 (110): : 243 - 254
- [6] NILPOTENT GROUPS AND COMPACT 3-MANIFOLDS PROCEEDINGS OF THE CAMBRIDGE PHILOSOPHICAL SOCIETY-MATHEMATICAL AND PHYSICAL SCIENCES, 1968, 64 : 303 - &
- [10] FINITE PRESENTATIONS OF GROUPS AND 3-MANIFOLDS QUARTERLY JOURNAL OF MATHEMATICS, 1961, 12 (47): : 205 - &