Heegaard diagrams and surgery descriptions for twisted face-pairing 3-manifolds. Cannon, J.W.; Floyd, W.J.; Parry, W.R. — 2003 Algebraic & Geometric Topology
Sufficiently rich families of planar rings. Cannon, J.W.; Floyd, W.J.; Parry, W.J. — 1999 Annales Academiae Scientiarum Fennicae. Mathematica