TRANSFAC, TRRD and COMPEL: towards a federated database system on transcriptional regulation. - Edgar Wingender; Alexander E. Kel; Olga V. Kel-Margoulis; Holger Karas; T. Heinemeyer; P. Dietze; Rainer Knüppel; Aida G. Romashchenko; Nikolay A. Kolchanov (Nucleic Acids Res., 1997)

A hierarchy of databases for modeling gene regulatory mechanisms. - Edgar Wingender; Xin Chen; T. Heinemeyer; Alexander E. Kel; Ines Liebich; T. Meinhardt (German Conference on Bioinformatics, 1998)

GenExpress: A Computer System for Description, Analysis and Recognition of Regulatory Sequences in Eukaryotic Genome. - Nikolay A. Kolchanov; Mikhail P. Ponomarenko; Alexander E. Kel; Yury V. Kondrakhin; Anatoly S. Frolov; Fedor A. Kolpakov; T. N. Goryachkovskaya; O. V. Kel; Elena A. Ananko; Elena V. Ignatieva; Olga A. Podkolodnaya; Vladimir N. Babenko; et al. (ISMB, 1998)

Databases on transcriptional regulation: TRANSFAC, TRRD and COMPEL. - T. Heinemeyer; Edgar Wingender; Ingmar Reuter; Henning Hermjakob; Alexander E. Kel; Olga V. Kel-Margoulis; Elena V. Ignatieva; Elena A. Ananko; Olga A. Podkolodnaya; Fedor A. Kolpakov; Nikolay L. Podkolodny; Nikolay A. Kolchanov (Nucleic Acids Res., 1998)

Expanding the TRANSFAC database towards an expert system of regulatory molecular mechanisms. - T. Heinemeyer; Xin Chen; Holger Karas; Alexander E. Kel; Olga V. Kel-Margoulis; Ines Liebich; T. Meinhardt; Ingmar Reuter; Frank Schacherer; Edgar Wingender (Nucleic Acids Res., 1999)