The instability strip of ZZ Ceti white dwarfs - I. Introduction of time-dependent convectionV. Van Grootel, M.-A. Dupret, G. Fontaine, P. Brassard, A. Grigahcène and P.-O. QuirionA&A, 539 (2012) A87DOI: https://doi.org/10.1051/0004-6361/201118371