1. Princeton Mathematical Series, 47;MS Baouendi,1999
2. Mathematical Surveys and Monographs, 154;A Čap,2009
3. Cartan, É.: Sur la géométrie pseudo-conforme des hypersurfaces de deux variables complexes. I. Ann. Math. Pura Appl 11(4), 17–90 (1932)
4. Cartan, É.: Sur la géométrie pseudo-conforme des hypersurfaces de deux variables complexes. II. Ann. Scuola Norm. Sup. Pisa 1, 333–354 (1932)
5. Chern, S.S., Moser, J.K.: Real hypersurfaces in complex manifolds. Acta Math. 133(3), 219–271 (1974)