@book{grillet,
author = "Pierre Antoine Grillet",
title = "Abstract Algebra",
edition = "second",
year = "2007",
publishers = "Springer",
series = "Graduate Texts in Mathematics",
address = "New York"
}

@book{robinson,
author = "Derek J. S. Robinson",
title = "A Course in the Theory of Groups",
edition = "second",
year = "1996",
publishers = "Springer",
series = "Graduate Texts in Mathematics",
address = "New York"
}

@book{cgt,
author = "Roger C. Lyndon and Paul E. Schupp",
title = "Combinatorial Group Theory",
series = "Classics in Mathematics",
publishers = "Springer",
address = "Berlin",
year = "2001"
}

@book{magnus,
author = "Wilhelm Magnus and Abraham Karrass and Donald Solitar",
title = "Combinatorial Group Theory: presentations of Groups in Terms of Generators and Relations",
publishers = "Dover",
year = "2004",
address ="New York"
}

@unpublished{millerIII,
title = "Combinatorial Group Theory",
author = "Charles F. {{Miller III}}",
year = "2004"
}

@article{millerIII-article,
title = "Some presentations of the trivial group",
author = "Charles F. {{Miller III}} and Paul E. Schupp",
year = "1999",
journal = "Contemporany Mathematics of the American Mathematical Society",
volume = "250",
pages = "113-115"
}

@book{meier,
title = "Groups, Graphs and Trees. An Introduction to the Geometry of Infinite Groups",
author = "John Meier",
publishers = "Cambride University Press",
series = "London Mathematical Society Student Texts",
volume = "73",
address = "Cambridge",
year= "2008"
}

@book{crm,
title = "The Geometry of The Word Problem for Finitely Generated Groups",
author = "Noel Brady and Tim Riley and Hamish Short",
publishers = "Springer",
year = "2007",
address = "Berlin",
series = "Advanced Courses in Mathematics CRM Barcelona"
}

@article{novikov,
 author = "P. S. Novikov",
 title = "On the algorithmic unsolvability of the word problem in group theory",
 journal = "Proceedings of Steklov Mathematical Institute",
 year = "1955",
 volume = "44",
 pages = "1-145",
 note = "Traducció anglesa a l'American Mathematical Society Translations (2) 9 (1958), 1-122"
}

@article{stillwell,
title = "The Word Problem and the isomorphism problem for groups",
author = "John Stillwell",
journal = "Bulletin (New Series) of the American Mathematical Society",
volume = 6,
number = 1,
year = 1982,
month = "Jan"
}

@incollection{millerIIIa2,
author = "Charles F. {{Miller III}}",
title = "Decision problems for groups: survey and reflections",
booktitle = "Algorithms and Classification in Combinatorial Group Theory",
year = "1992",
publisher = "Springer-Verlag",
address = "Berlin",
editor = "Gilbert Baumslag and Charles F. {{Miller III}}",
pages = "1-59",
series = "MSRI Publications",
volume = 23
}

@incollection{bridson-tutorial,
 author= "Martin R. Bridson",
 title = {{The geometry of the word problem}},
 booktitle= "Invitations to Geometry and Topology",
 year = "2002",
 publisher = "Oxford University Press",
 editor = "Martin R. Bridson, Simon M. Salamon",
 pages="29-92"
}

@incollection{gersten,
author = "S. M. Gersten",
title = "Isoperimetric and isodiametric functions of finite presentations",
booktitle = "Geometric Group Theory volume 1",
editor = "G. Niblo and M. Roller",
series = "London Mathematical Society Lecture Note Series",
volume = 181,
pages = "79-96",
publisher = "Cambridge University Press",
address = "Cambridge",
year = "1993"
}






@article{bridson,
 author = "Martin R. Bridson",
 title = "On the geometry of normal forms in discrete groups",
 journal = "Proceedings of the London Mathematical Society",
 year = "1993",
 volume = "67",
 pages = "595-616"
}

@article{riley,
author = "Tim R. Riley",
title = "The geometry of groups satisfying weak almost-convexity or weak geodesic-combability conditions",
journal = "Journal of Group Theory",
year = "2002",
volume= 5,
pages = "513-525"
}

@book{epstein,
 author = "Epstein, David B. A. and J. W. Cannon and D. F. Holt and S. V. F. Levy and M. S. Paterson and W. P. Thurston",
 title = "Word processing in groups",
 publishers="Jones and Barlett Publishers",
 year= "1992"
}

@book{delaharpe,
 author= "de la Harpe, Pierre",
 title = "Topics in Geometric Group Theory",
 publishers = "University of Chicago Press",
 series= "Chicago Lectures in Mathematics",
 year = "2000"
}