References
- Adeleke , S. A. and Neumann , P. M. 1998 . Relations Related To Betweenness: Their Structure and Automorphisms , Memoirs Amer. Math. Soc. Vol. 623 , Providence, RI : Amer. Math. Soc. .
- Alperin , R. C. and Bass , H. 1987 . “ Length functions of group actions on Λ-trees ” . In Combinatorial Group Theory and Topology , Annals of Math. Studies Edited by: Gersten , S. M. and Stallings , J. R. Vol. 111 , 265 – 378 . Princeton : Princeton University Press .
- Bandelt , H.-J. and Hedlikova , J. 1983 . Median algebras . Discrete Math. , 45 : 1 – 30 .
- Basarab , Ş. A. 1997 . Directions and foldings on generalized Trees . Fund. Inform. , 30 : 125 – 149 .
- Basarab , Ş. A. 1998 . On discrete hyperbolic arboreal groups . Comm. Algebra , 26 : 2837 – 2865 .
- Bass , H. 1991 . “ Group actions on non-archimedean trees ” . In Arboreal Group Theory Edited by: Alperin , R. C. Vol. 19 , 69 – 131 . New York : MSRI Publications, Springer-Verlag .
- Bennett, C. D. (1990). Affine Λ-buildings. Ph.D. thesis, University of Chicago
- Bowditch , B. H. 1999 . Treelike Structures Arising from Continua and Convergence Groups , Memoirs Amer. Math. Soc. Vol. 662 , Providence, RI : Amer. Math. Soc. .
- Chiswell , I. M. 1994 . “ Generalised trees and Λ-trees ” . In Combinatorial and Geometric Group Theory, Edinburg 1993 , London Math. Soc. Lecture Notes Edited by: Duncan , A. J. , Gilbert , N. D. and Howie , J. Vol. 204 , 43 – 55 . Cambridge : Cambridge University Press .
- Chiswell , I. M. 1998 . “ Protrees and Λ-trees ” . In Geometry and Cohomology in Group Theory , London Math. Soc. Lecture Notes Edited by: Kropholler , P. H. , Niblo , G. A. and Stöhr , R. Vol. 252 , 74 – 87 . Cambridge : Cambridge University Press .
- Dunwoody , M. J. 1997 . Groups acting on protrees . J. London Math. Soc. , 56 : 125 – 136 .
- Herrlich , F. 1991 . Moduli for stable marked trees of projective lines . Math. Ann. , 291 : 643 – 661 .
- Hoare , A. H. M. 1988 . Pregroups and length functions . Math. Proc. Cambridge Philos. Soc. , 104 : 21 – 30 .
- Koudels, E. (1997). Group Actions on Λ-Trees. Ph.D. thesis. University of London
- Nikiel , J. 1989 . Topologies on Pseudo-trees and Applications , Memoirs Amer. Math. Soc. Vol. 416 , Providence, RI : Amer. Math. Soc. .
- Rimlinger , F. S. 1987 . Pregroups and Base-Serre Theory , Memoirs Amer. Math. Soc. Vol. 361 , Providence, RI : Amer. Math. Soc. .
- Shalen , P. B. 1991 . “ Dendrology and its applications ” . In Group Theory from a Geometrical Viewpoint Edited by: Ghys , E. , Haefliger , A. and Verjovsky , A. Singapore : World Scientific .
- Tits , J. 1986 . “ Immeubles de type affine ” . In Buildings and the Geometry of Diagrams, Como 1984 , Lecture Notes in Mathematics Vol. 1181 , 159 – 190 . Berlin, Heidelberg, New York : Springer-Verlag .
- van den Dries , L. and Wilkie , A. 1984 . Gromov's theorem on groups of polynomial growth and elementary logic . J. Algebra , 89 : 349 – 374 .