1. É. Cartan, “Les sous-groupes des groupes continus de transformations,” Ann. Sci. École Normale Supérieure
25, 57–194 (1908). https://doi.org/10.24033/asens.588
2. S. I. Agafonov, “Local classification of singular hexagonal 3-webs with holomorphic Chern connection form and infinitesimal symmetries,” Geometriae Dedicata
176, 87–115 (2014). https://doi.org/10.1007/s10711-014-9960-8
3. A. Hénaut, “Lie symmetries for implicit planar webs,” J. Math. Sci. 29, 115–148 (2022).
4. A. M. Shelekhov, “Curvilinear three-webs admitting one-parameter family of automorphisms.,” Russ. Math. 49 (5), 64–66 (2005).
5. N. V. Gvozdovich, “On infinitesimal automorphisms of multi-dimensional three-webs,” Sov. Math. 26 (5), 94–97 (1982).