On Weyl’s type theorems and genericity of projective rigidity in sub-Riemannian geometry
F. Jean, S. Maslovskaya, I. Zelenko, Geometriae Dedicata 213 (2020) 295–314.

On projective and affine equivalence of sub-Riemannian metrics
F. Jean, S. Maslovskaya, I. Zelenko, Geometriae Dedicata (2019) 279–319.