Asteroseismological constraints on the pulsating planetary nebula nucleus (PG1159-type) RX J2117.1+3412A. H. Córsico, L. G. Althaus and M. M. Miller BertolamiA&A, 470 3 (2007) 1031DOI: https://doi.org/10.1051/0004-6361:20066452e
