CYGD: the Comprehensive Yeast Genome Database. - Ulrich Güldener; Martin Münsterkötter; Gabi Kastenmüller; Normann Strack; Jacques van Helden; Christian Lemer; J. Richelles; Shoshana J. Wodak; J. García-Martínez; José E. Pérez-Ortín; Holger Michael; Andreas Kaps; et al. (Nucleic Acids Res., 2005)