S I Adian, The
Burnside problem and identities in groups, Ergebnisse der
Math. und ihrer Grenzgebiete 95, Springer (1979) MR537580
2
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
B H Bowditch,
Notes on Gromov's hyperbolicity criterion for path-metric
spaces, from: "Group theory from a geometrical viewpoint
(Trieste, 1990)" (editors É Ghys, A Haefliger, A Verjovsky),
World Sci. Publ. (1991) 64 MR1170364
7
M R Bridson, A
Haefliger, Metric spaces of non-positive curvature,
Grund. der Math. Wissenschaften 319, Springer (1999) MR1744486
C Druţu, Relatively
hyperbolic groups: geometry and quasi-isometric invariance,
to appear in Comm. Math. Helv. arXiv:math/0605211
11
C Druţu, Quasi-isometry
invariants and asymptotic cones, from: "International
Conference on Geometric and Combinatorial Methods in Group
Theory and Semigroup Theory (Lincoln, NE, 2000)", Internat. J.
Algebra Comput. 12 (2002) 99 MR1902363
12
C Druţu, S
Mozes, M V Sapir, Divergence in lattices in
semisimple Lie groups and graphs of groups, to appear in
Trans. Amer. Math. Soc. arXiv:0801.4141
É Ghys, P de la
Harpe, Espaces métriques hyperboliques, from: "Sur
les groupes hyperboliques d'après Mikhael Gromov (Bern, 1988)",
Progr. Math. 83, Birkhäuser Boston (1990) 27 MR1086650
M Gromov,
Hyperbolic groups, from: "Essays in group theory"
(editor S Gersten), Math. Sci. Res. Inst. Publ. 8, Springer
(1987) 75 MR919829
21
M Gromov,
Asymptotic invariants of infinite groups, from:
"Geometric group theory, Vol. 2 (Sussex, 1991)" (editors
G A Niblo, M A Roller), London Math. Soc. Lecture
Note Ser. 182, Cambridge Univ. Press (1993) 1 MR1253544
22
M Gromov, Random
walk in random groups, Geom. Funct. Anal. 13 (2003) 73
MR1978492
23
P Hall, The
Edmonton notes on nilpotent groups, Queen Mary College
Math. Notes, Math. Dept., Queen Mary College (1969) MR0283083
24
G Higman, Amalgams
of $p$–groups, J. Algebra 1 (1964) 301 MR0167527
R C Lyndon,
P E Schupp, Combinatorial group theory,
Ergebnisse der Math. und ihrer Grenzgebiete 89, Springer (1977)
MR0577064
34
A I Mal’cev,
Model correspondences, Izv. Akad. Nauk SSSR. Ser. Mat.
23 (1959) 313 MR0120152
35
K V
Mikhajlovskii, A Y Ol’shanskii, Some
constructions relating to hyperbolic groups, from:
"Geometry and cohomology in group theory (Durham, 1994)"
(editors P H Kropholler, G A Niblo, R Stöhr), London
Math. Soc. Lecture Note Ser. 252, Cambridge Univ. Press (1998)
263 MR1709962