White dwarf evolutionary sequences for low-metallicity progenitors: The impact of third dredge-upLeandro G. Althaus, María E. Camisassa, Marcelo M. Miller Bertolami, Alejandro H. Córsico and Enrique García–BerroA&A, 576 (2015) A9DOI: https://doi.org/10.1051/0004-6361/201424922