Free and based path groupoids.

(With A. Angel) Algebraic & Geometric Topology,  to appear 2022.

A Motion Planning Algorithm in a Lollipop Graph

(With A. Boughrira.) Minnesota Journal of Undergraduate Mathematics, [S.l.], v. 6, feb. 2021.

Morita Invariance of Equivariant Lusternik-Schnirelmann Category and Invariant Topological Complexity.

(With A. Angel,  M. Grant, J. Oprea.) Theory and Applications of Categories, Vol. 35, 2020, No. 7, pp 179-195 (2020)

Equivariant topological complexities.

(With A. Angel.) Contemporary Mathematics. 1-15. 10.1090/conm/702/14103 (2018)      

The Lusternik-Schnirelmann Category for a differentiable stack.

(With S. Alsulami and F. Neumann.) Mathematics across Contemporary Sciences, 2016.

Equivariant topological complexity.

(With M. Grant.) Algebraic & Geometric Topology 12, 2012.

The Lusternik-Schnirelmann category of a Lie groupoid.

Trans. Amer. Math. Soc., 2010.

On the 1-Homotopy Type of Lie Groupoids.

Applied Categorical Structures, 2011.

A model category for orbifolds.

(With C. Costoya.) Preprint, 2009.

Lusternik-Schnirelmann category of orbifolds.

Skye conference booklet, 2005.

Transverse Lusternik-Schnirelmann category of Riemannian foliations.

Topology and its Applications, 2004.

LS-category of compact-Hausdorff foliations 

(With S. Hurder.) Trans. Amer. Math. Soc., 2004.

Equivariant LS-category for finite group actions.

Contemporary Mathematics, 2002.

Tangential Lusternik-Schnirelmann category of foliations 

(With E. Macias.) Journal of the London Mathematical Society, 2002.

Tangential LS category and cohomology for foliations 

(With S. Hurder.) Proc. of LS Category in the New Millennium, 2002.

LS-Categories for foliated manifolds.

Proceedings of Foliations, World Scientific Publishing, 2002.

Transverse Lusternik-Schnirelmann category of foliated manifolds 

(With E. Macias.) Topology, 2000.

Categoría LS en foliaciones.

Universidade de Santiago de Compostela, 1998.

Local Fibrewise Category.

C.R. Acad. Sci. Paris, 1997.