Juan A. Moya Pérez; Juan J. Nuño Ballesteros (2015) Gauss words and the topology of map germs from R^3 to R^3. Revista Matematica Iberoamericana, 31(1), pp. 977 - 988 . ISSN: 0213-2230
J. A. Moya-Pérez; J. J. Nuño Ballesteros (2023) The dual tree of a fold map germ from ℝ3 to ℝ4. Proceedings of the Royal Society of Edinburgh Section A-Mathematics, 153(3), pp. 958 - 977 . ISSN: 0308-2105