Journal Article
Homotopy theory, and change of base for groupoids and multiple groupoids
Ronald Brown
Applied Categorical Structures, 1996, Volume 4, Numbers 2-3, Pages 175-193
Book Chapter
Crossed complexes and non-abelian extensions
Ronald Brown and Philip J. Higgins
Lecture Notes in Mathematics, 1982, Volume 962, Category Theory, Pages 39-50
Journal Article
Galois Theory and a New Homotopy Double Groupoid of a Map of Spaces
Ronald Brown and George Janelidze
Applied Categorical Structures, 2004, Volume 12, Number 1, Pages 63-80
Journal Article
On the tensor algebra of a non-abelian group and applications
Hans Joachim Baues and Daniel Conduché
K-Theory, 1991, Volume 5, Number 6, Pages 531-554
Journal Article
Crossed squares and combinatorial homotopy
Graham Ellis
Mathematische Zeitschrift, 1993, Volume 214, Number 1, Pages 93-110
Journal Article
Homotopies and Automorphisms of Crossed Modules of Groupoids
Ronald Brown and İlhan İçen
Applied Categorical Structures, 2003, Volume 11, Number 2, Pages 185-206
Book Chapter
The fundamental groupoid and the homotopy crossed complex of an orbit space
P. J. Higgins and J. Taylor
Lecture Notes in Mathematics, 1982, Volume 962, Category Theory, Pages 115-122
Book Chapter
Homological Algebra
Anthony Knapp
Cornerstones, 2007, Advanced Algebra, Pages 166-261
Book Chapter
Internal Categorical Structures in Homotopical Algebra
Simona Paoli
The IMA Volumes in Mathematics and its Applications, 1, Volume 152, Towards Higher Categories, Pages 85-103
Book Chapter
On the homotopy category of Moore spaces and an old result of Barratt
Hans Joachim Baues
Lecture Notes in Mathematics, 1991, Volume 1474, Algebraic Topology Poznan 1989, Pages 207-230