#### Volume 8, issue 1 (2004)

 1 I Aitchison, Canonical flat structures on 3–manifolds, preprint 2 J M Alonso, T Brady, D Cooper, V Ferlini, M Lustig, M Mihalik, H Short, Notes on word hyperbolic groups, from: "Group theory from a geometrical viewpoint (Trieste, 1990)" (editor H Short), World Sci. Publ., River Edge, NJ (1991) 3 MR1170363 3 W Ballmann, Singular spaces of nonpositive curvature, from: "Sur les groupes hyperboliques d'après Mikhael Gromov (Bern, 1988)", Progr. Math. 83, Birkhäuser (1990) 189 MR1086658 4 W Ballmann, M Brin, Polygonal complexes and combinatorial group theory, Geom. Dedicata 50 (1994) 165 MR1279883 5 V Bangert, V Schroeder, Existence of flat tori in analytic manifolds of nonpositive curvature, Ann. Sci. École Norm. Sup. $(4)$ 24 (1991) 605 MR1132759 6 N Benakli, Polygonal complexes I: Combinatorial and geometric properties, J. Pure Appl. 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Ann. 166 (1966) 208 MR0214650 30 R C Lyndon, P E Schupp, Combinatorial group theory, Ergebnisse der Mathematik und ihrer Grenzgebiete 89, Springer (1977) MR0577064 31 H A Masur, Y N Minsky, Geometry of the complex of curves I: Hyperbolicity, Invent. Math. 138 (1999) 103 MR1714338 32 J P McCammond, D T Wise, Fans and ladders in small cancellation theory, Proc. London Math. Soc. $(3)$ 84 (2002) 599 MR1888425 33 H M Morse, A fundamental class of geodesics on any closed surface of genus greater than one, Trans. Amer. Math. Soc. 26 (1924) 25 MR1501263 34 G Moussong, Hyperbolic Coxeter groups, PhD thesis, Ohio State University (1988) 35 G A Niblo, L D Reeves, The geometry of cube complexes and the complexity of their fundamental groups, Topology 37 (1998) 621 MR1604899 36 P Papasoglu, Strongly geodesically automatic groups are hyperbolic, Invent. Math. 121 (1995) 323 MR1346209 37 S J Pride, Star-complexes, and the dependence problems for hyperbolic complexes, Glasgow Math. J. 30 (1988) 155 MR942986 38 D Y Rebbechi, Algorithmic properties of relatively hyperbolic groups, PhD thesis, Rutgers University (2001) 39 W Rudin, Real and complex analysis, McGraw-Hill Book Co. (1987) MR924157 40 Z Sela, Diophantine geometry over groups: A list of research problems 41 H Short, Quasiconvexity and a theorem of Howson's, from: "Group theory from a geometrical viewpoint (Trieste, 1990)", World Sci. Publ., River Edge, NJ (1991) 168 MR1170365 42 P Tukia, Convergence groups and Gromov's metric hyperbolic spaces, New Zealand J. Math. 23 (1994) 157 MR1313451 43 E R V Kampen, On Some Lemmas in the Theory of Groups, Amer. J. Math. 55 (1933) 268 MR1506963 44 C M Weinbaum, The word and conjugacy problems for the knot group of any tame, prime, alternating knot, Proc. Amer. Math. Soc. 30 (1971) 22 MR0279169 45 J M Wilson, A CAT(0) group with uncountably many distinct boundaries, J. Group Theory 8 (2005) 229 MR2126732 46 D T Wise, Non-positively curved squared complexes, aperiodic tilings, and non-residually finite groups, PhD thesis, Princeton University (1996) 47 D T Wise, Subgroup separability of the figure 8 knot group, Topology 45 (2006) 421 MR2218750