Groupoids and crossed objects in algebraic topology.
Groupoids and Groups.
Groupoids and the Brauer group
Groupoids, stability cokernel sequences and duality
Groupoids, the Phragmen-Brouwer property, and the Jordan curve theorem.
Groupoids with a closure condition
Groupoids with non-associative triples on the diagonal
Gruppoide und boolesche Strukturen
Higher fundamental functors for simplicial sets
Higher-dimensional algebra. V: 2-Groups.
Homology of -fold groupoids.
Idempotent Topological Groupoids with Non-Empty Center.
Independent basis for the identities of entropic groupoids
Integrability obstructions for extensions of Lie algebroids
Interior idempotents and non-representability of groupoids.
Internal crossed modules.
Low-dimensional cohomology for categorical groups
Medial division groupoids
Minimal algebras in some class of algebras
Modular groupoids