Leuther, T.; Radoux, F.
(Symmetry, Integrability and Geometry: Methods and Applications, 2011)
The existence of a natural and projectively invariant quantization in the sense of P. Lecomte [Progr. Theoret. Phys. Suppl. (2001), no. 144, 125-132] was proved by M. Bordemann [math.DG/0208171], using the framework of ...