Asteroseismology of hot pre-white dwarf stars: the case of the DOV stars PG 2131+066 and PG 1707+427, and the PNNV star NGC 1501A. H. Córsico, L. G. Althaus, M. M. Miller Bertolami and E. García-BerroA&A, 499 1 (2009) 257-266DOI: https://doi.org/10.1051/0004-6361/200810727