Miller Bertolami, M. M. Stellar Astrophysics, MPI for Astrophysics, Max Planck Society;
Córsico, A. H., Althaus, L. G., Miller Bertolami, M. M., & Werner, K. (2007). Asteroseismological constraints on the pulsating planetary nebula nucleus (PG 1159-type) RX J2117.1+3412. Astronomy & Astrophysics, 461(3), 1095-1102. doi:10.1051/0004-6361:20066452.