1. Appendix to the book of V.P Maslov;Arnold,1965
2. Appendix to the book of VP Maslov;Arnold,1992
3. Géometrie et topologie des sous-varietes lagrangiennes ou totalement réelles;Borrelli,1996
4. Classe de Maslov des sous-varietes totalemȩnt réelles;Borrelli;C.R. Acad. Sc. Paris,1996
5. Geometry of Submanifolds and its Applications;Chen,1980