#### Volume 6, issue 1 (2002)

 1 W Abikoff, The real analytic theory of Teichmüller space, Lecture Notes in Mathematics 820, Springer (1980) MR590044 2 G N Arzhantseva, On quasiconvex subgroups of word hyperbolic groups, Geom. Dedicata 87 (2001) 191 MR1866849 3 R Baer, Isotopien von Kurven auf orientierbaren, geschlossenen Flächen und ihr Zusammenhang mit der topologischen Deformation der Flächen, J. Reine Angew. Math. 159 (1928) 101 4 L Bers, Fiber spaces over Teichmüller spaces, Acta. Math. 130 (1973) 89 MR0430318 5 L Bers, An extremal problem for quasiconformal mappings and a theorem by Thurston, Acta Math. 141 (1978) 73 MR0477161 6 M Bestvina, M Feighn, A combination theorem for negatively curved groups, J. Differential Geom. 35 (1992) 85 MR1152226 7 J S Birman, Braids, links, and mapping class groups, Annals of Mathematics Studies 82, Princeton University Press (1974) MR0375281 8 J S Birman, A Lubotzky, J McCarthy, Abelian and solvable subgroups of the mapping class groups, Duke Math. J. 50 (1983) 1107 MR726319 9 N Brady, Branched coverings of cubical complexes and subgroups of hyperbolic groups, J. London Math. Soc. $(2)$ 60 (1999) 461 MR1724853 10 J Brock, B Farb, Curvature and rank of Teichmüller space, Amer. J. Math. 128 (2006) 1 MR2197066 11 R D Canary, Covering theorems for hyperbolic 3–manifolds, from: "Low-dimensional topology (Knoxville, TN, 1992)", Conf. Proc. Lecture Notes Geom. Topology, III, Int. Press, Cambridge, MA (1994) 21 MR1316167 12 J W Cannon, The theory of negatively curved spaces and groups, from: "Ergodic theory, symbolic dynamics, and hyperbolic spaces (Trieste, 1989)", Oxford Sci. Publ., Oxford Univ. Press (1991) 315 MR1130181 13 D B A Epstein, Curves on 2–manifolds and isotopies, Acta Math. 115 (1966) 83 MR0214087 14 B Farb, A Lubotzky, Y Minsky, Rank-1 phenomena for mapping class groups, Duke Math. J. 106 (2001) 581 MR1813237 15 B Farb, L Mosher, The geometry of surface-by-free groups, Geom. Funct. Anal. 12 (2002) 915 MR1937831 16 , Travaux de Thurston sur les surfaces, Astérisque 66, Société Mathématique de France (1979) 284 MR568308 17 F P Gardiner, H Masur, Extremal length geometry of Teichmüller space, Complex Variables Theory Appl. 16 (1991) 209 MR1099913 18 S M Gersten, Cohomological lower bounds for isoperimetric functions on groups, Topology 37 (1998) 1031 MR1650363 19 G González-Díez, W J Harvey, Surface groups inside mapping class groups, Topology 38 (1999) 57 MR1644059 20 A Haefliger, Complexes of groups and orbihedra, from: "Group theory from a geometrical viewpoint (Trieste, 1990)", World Sci. Publ., River Edge, NJ (1991) 504 MR1170375 21 J Hubbard, H Masur, Quadratic differentials and foliations, Acta Math. 142 (1979) 221 MR523212 22 Y Imayoshi, M Taniguchi, An introduction to Teichmüller spaces, Springer (1992) MR1215481 23 N V Ivanov, Subgroups of Teichmüller modular groups, Translations of Mathematical Monographs 115, American Mathematical Society (1992) MR1195787 24 N V Ivanov, Automorphisms of complexes of curves and of Teichmüller spaces, from: "Progress in knot theory and related topics", Travaux en Cours 56, Hermann (1997) 113 MR1603146 25 M Kapovich, On normal subgroups in the fundamental groups of complex surfaces, arXiv:math.GT/9808085 26 S P Kerckhoff, The asymptotic geometry of Teichmüller space, Topology 19 (1980) 23 MR559474 27 B Maskit, Comparison of hyperbolic and extremal lengths, Ann. Acad. Sci. Fenn. Ser. A I Math. 10 (1985) 381 MR802500 28 H Masur, Uniquely ergodic quadratic differentials, Comment. Math. Helv. 55 (1980) 255 MR576605 29 H Masur, Interval exchange transformations and measured foliations, Ann. of Math. $(2)$ 115 (1982) 169 MR644018 30 H Masur, Two boundaries of Teichmüller space, Duke Math. J. 49 (1982) 183 MR650376 31 H Masur, Hausdorff dimension of the set of nonergodic foliations of a quadratic differential, Duke Math. J. 66 (1992) 387 MR1167101 32 H A Masur, Y N Minsky, Geometry of the complex of curves I: Hyperbolicity, Invent. Math. 138 (1999) 103 MR1714338 33 H A Masur, Y N Minsky, Unstable quasi-geodesics in Teichmüller space, from: "In the tradition of Ahlfors and Bers (Stony Brook, NY, 1998)", Contemp. Math. 256, Amer. Math. Soc. (2000) 239 MR1759683 34 H A Masur, M Wolf, Teichmüller space is not Gromov hyperbolic, Ann. Acad. Sci. Fenn. Ser. A I Math. 20 (1995) 259 MR1346811 35 J McCarthy, A “Tits-alternative” for subgroups of surface mapping class groups, Trans. Amer. Math. Soc. 291 (1985) 583 MR800253 36 J McCarthy, A Papadopoulos, Dynamics on Thurston's sphere of projective measured foliations, Comment. Math. Helv. 64 (1989) 133 MR982564 37 Y N Minsky, On rigidity, limit sets, and end invariants of hyperbolic 3–manifolds, J. Amer. Math. Soc. 7 (1994) 539 MR1257060 38 Y N Minsky, Quasi-projections in Teichmüller space, J. Reine Angew. Math. 473 (1996) 121 MR1390685 39 L Mosher, Hyperbolic extensions of groups, J. Pure Appl. Algebra 110 (1996) 305 MR1393118 40 L Mosher, A hyperbolic-by-hyperbolic hyperbolic group, Proc. Amer. Math. Soc. 125 (1997) 3447 MR1443845 41 L Mosher, Stable Teichmüller quasigeodesics and ending laminations, Geom. Topol. 7 (2003) 33 MR1988281 42 D Mumford, A remark on Mahler's compactness theorem, Proc. Amer. Math. Soc. 28 (1971) 289 MR0276410 43 J Nielsen, Untersuchungen zur Topologie der geschlossenen zweiseitigen Flächen, Acta Math. 50 (1927) 189 MR1555256 44 J P Otal, Le théorème d'hyperbolisation pour les variétés fibrées de dimension 3, Astérisque (1996) MR1402300 45 H L Royden, Report on the Teichmüller metric, Proc. Nat. Acad. Sci. U.S.A. 65 (1970) 497 MR0259115 46 J R Stallings, Non-positively curved triangles of groups, from: "Group theory from a geometrical viewpoint (Trieste, 1990)", World Sci. Publ., River Edge, NJ (1991) 491 MR1170374 47 K Whittlesey, Normal all pseudo–Anosov subgroups of mapping class groups, Geom. Topol. 4 (2000) 293 MR1786168