#### Volume 13, issue 4 (2009)

 1 J M Alonso, T Brady, D Cooper, V Ferlini, M Lustig, M Mihalik, H Short (editor), Notes on word hyperbolic groups, from: "Group theory from a geometrical viewpoint (Trieste, 1990)" (editors É Ghys, A Haefliger, A Verjovsky), World Sci. Publ. (1991) 3 MR1170363 2 H J Bandelt, M van de Vel, Superextensions and the depth of median graphs, J. Combin. Theory Ser. A 57 (1991) 187 MR1111556 3 B Bowditch, Relatively hyperbolic groups, Univ. of Southampton Preprint Ser. (1999) 4 V Chepoi, Graphs of some $\mathrm{CAT}(0)$ complexes, Adv. in Appl. Math. 24 (2000) 125 MR1748966 5 C Drutu, M Sapir, Tree-graded spaces and asymptotic cones of groups, Topology 44 (2005) 959 MR2153979 6 B Farb, Relatively hyperbolic groups, Geom. Funct. Anal. 8 (1998) 810 MR1650094 7 V N Gerasimov, Semi-splittings of groups and actions on cubings, from: "Algebra, geometry, analysis and mathematical physics (Novosibirsk, 1996)" (editors Y G Reshetnyak, L A Bokut′, S K Vodop′yanov, I A Taĭmanov), Izdat. Ross. Akad. Nauk Sib. Otd. Inst. Mat., Novosibirsk (1997) 91, 190 MR1624115 8 R Gitik, M Mitra, E Rips, M Sageev, Widths of subgroups, Trans. Amer. Math. Soc. 350 (1998) 321 MR1389776 9 M Gromov, Hyperbolic groups, from: "Essays in group theory" (editor S M Gersten), Math. Sci. Res. Inst. Publ. 8, Springer (1987) 75 MR919829 10 G C Hruska, Relative hyperbolicity and relative quasiconvexity for countable groups arXiv:0801.4596v1 11 G C Hruska, D Wise, Finiteness properties of cubulated groups, in preparation 12 E Martínez-Pedroza, Combination of quasiconvex subgroups of relatively hyperbolic groups, Groups Geom. Dyn. 3 (2009) 317 13 G A Niblo, L D Reeves, Coxeter groups act on $\mathrm{CAT}(0)$ cube complexes, J. Group Theory 6 (2003) 399 MR1983376 14 G A Niblo, M A Roller, Groups acting on cubes and Kazhdan's property (T), Proc. Amer. Math. Soc. 126 (1998) 693 MR1459140 15 D V Osin, Relatively hyperbolic groups: intrinsic geometry, algebraic properties, and algorithmic problems, Mem. Amer. Math. Soc. 179 (2006) MR2182268 16 E Rips, Subgroups of small cancellation groups, Bull. London Math. Soc. 14 (1982) 45 MR642423 17 M Roller, Poc sets, median algebras and group actions. An extended study of Dunwoody's construction and Sageev's theorem, Univ. of Southampton Preprint Ser. (1998) 18 J H Rubinstein, M Sageev, Intersection patterns of essential surfaces in $3$–manifolds, Topology 38 (1999) 1281 MR1690158 19 J H Rubinstein, S Wang, $\pi_1$–injective surfaces in graph manifolds, Comment. Math. Helv. 73 (1998) 499 MR1639876 20 M Sageev, Ends of group pairs and non-positively curved cube complexes, Proc. London Math. Soc. $(3)$ 71 (1995) 585 MR1347406 21 M Sageev, Codimension–$1$ subgroups and splittings of groups, J. Algebra 189 (1997) 377 MR1438181