TRANSFAC, TRRD and COMPEL: towards a federated database system on transcriptional regulation.
Edgar WingenderAlexander E. KelOlga V. Kel-MargoulisHolger KarasT. HeinemeyerP. DietzeRainer KnüppelAida G. RomashchenkoNikolay A. KolchanovPublished in: Nucleic Acids Res. (1997)