1. Géométrie des formes de contact complètement intégrables de type toriques;Banyaga, A.,1993
2. [BM2] A. Banyaga and P. Molino, Complete Integrability in Contact Geometry, Pennsylvania State University preprint PM 197, 1996.
3. Ergebnisse der Mathematik und ihrer Grenzgebiete (3) [Results in Mathematics and Related Areas (3)];Besse, Arthur L.,1987
4. [BG1] C. P. Boyer and K. Galicki, 3-Sasakian Manifolds, Surveys in Differential Geometry, VI; Essays on Einstein Manifolds, International Press 1999; C. LeBrun and M. Wang, Eds., pp. 123–184.
5. [BG2] C. P. Boyer and K. Galicki, On Sasakian-Einstein Geometry, preprint DG/981108, to appear in Int. J. Math.