1. Differential operators on the base affine space and a study of g-modules;Bernšteĭn,1975
2. Homogeneous vector bundles;Bott;Ann. of Math. (2),1957
3. Differential invariants and curved Bernstein–Gelfand–Gelfand sequences;Calderbank;J. Reine Angew. Math.,2001
4. Correspondence spaces and twistor spaces for parabolic geometries;Čap;J. Reine Angew. Math.,2005
5. Parabolic Geometries. I: Background and General Theory;Čap,2009