1. [1] Androulidakis, Iakovos; Skandalis, Georges The holonomy groupoid of a singular foliation, J. Reine Angew. Math., Volume 626 (2009), pp. 1-37
2. [2] Androulidakis, Iakovos; Zambon, Marco Stefan–Sussmann singular foliations, singular subalgebroids and their associated sheaves, Int. J. Geom. Methods Mod. Phys., Volume 13 (2016), 1641001, 17 pages
3. [3] Arnold, Vladimir I.; Gusein-Zade, Sabir M.; Varchenko, Alexander N. Singularities of differentiable maps. Volume I: The classification of critical points, caustics and wave fronts, Monographs in Mathematics, Volume 82, Birkhäuser, 1985
4. [4] Dufour, Jean-Paul; Zung, Nguyen Tien Linearization of Nambu structures, Compos. Math., Volume 117 (1999) no. 1, p. 77--98
5. [5] Dufour, Jean-Paul; Zung, Nguyen Tien Poisson structures and their normal forms, Progress in Mathematics, Volume 242, Birkhäuser, 2005