by Caicedo, J.A., Urrutia, L.F.
Published in Physics letters. B (03.11.2011)

by Martín-Ruiz, A., Cambiaso, M., Urrutia, L. F.
Published in Europhysics letters (01.03.2016)

by Velázquez, Daniel G, Urrutia, L F
Published in Physica scripta (01.09.2020)

by Medel, Leonardo, Martín-Ruiz, A., Urrutia, L. F.
Published in European physical journal plus (12.01.2023)

by Escobar, C. A., Urrutia, L. F.
Published in Europhysics letters (01.05.2014)

by Reyes, C.M., Urrutia, L.F., Vergara, J.D.
Published in Physics letters. B (18.05.2009)

by Escobar, C A, Urrutia, L F
Published in Journal of physics. Conference series (01.01.2018)

by Escobar, C. A., Urrutia, L. F.
Published in Journal of physics. Conference series (01.10.2016)

by Martín Ruiz, A, Frank, Alejandro, Urrutia, L F
Published in Physica scripta (01.04.2014)

by Burgio, G., De Pietri, R., Morales-Técotl, H.A., Urrutia, L.F., Vergara, J.D.
Published in Nuclear physics. B (07.02.2000)

by Urrutia, L F
Published in arXiv.org (01.07.2022)

by Barredo, E, Urrutia, L F
Published in arXiv.org (03.07.2022)

by Gómez, A, Martín-Ruiz, A, Urrutia, L F
Published in arXiv.org (03.04.2022)

by Velázquez, Daniel G, Urrutia, L F
Published in arXiv.org (19.07.2020)

by Urrutia, L F, Zertuche, F
Published in Classical and quantum gravity (01.03.1992)

by Urrutia, L F
Published in arXiv.org (12.07.2016)

by Martín-Ruiz, A, Urrutia, L F
Published in arXiv.org (28.01.2018)

by Martín-Ruiz, A, Cambiaso, M, Urrutia, L F
Published in arXiv.org (10.04.2019)

by Martín-Ruiz, A, Urrutia, L F
Published in arXiv.org (27.06.2017)

by Martín-Ruiz, A, Rodríguez-Tzompantzi, Omar, Maze, J R, Urrutia, L F
Published in arXiv.org (23.10.2019)