Prat, V. Stellar Astrophysics, MPI for Astrophysics, Max Planck Society;
Prat, V., Lignières, F., & Ballot, J. (2016). Asymptotic theory of gravity modes in rotating stars - I. Ray dynamics. Astronomy & Astrophysics, 587: A110, pp. 1-24. doi:10.1051/0004-6361/201527737.