1. Lowest degree invariant 2nd order PDEs over rational homogeneous contact manifolds;Alekseevsky;Commun. Contemp. Math.,2017
2. Non-rigid parabolic geometries of Monge type;Anderson;Adv. Math.,2015
3. Correspondence spaces and twistor spaces for parabolic geometries;Čap;J. Reine Angew. Math.,2005
4. Parabolic Geometries I: Background and General Theory;Čap,2009
5. Sur la structure des groupes simples finis et continus;Cartan;C. R. Acad. Sci.,1893