In this paper, a generalization of a well-known result of Cohen and Cooperstein on strong parapolar spaces of symplectic rank at least three, with only finite-dimensional singular subspaces, is presented. In contrast with the aforementioned theorem, we do not assume that symplecta posses a uniform symplectic rank, we drop the assumption that the considered spaces are strong parapolar spaces, and we replace axiom (CC) by the much more general “haircut axiom."
"Parapolar spaces with the “haircut” axiom." Innov. Incidence Geom. 15 265 - 286, 2017. https://doi.org/10.2140/iig.2017.15.265