A cholinesterase genes server (ESTHER): a database of cholinesterase- related sequences for multiple alignments, phylogenetic relationships, mutations and structural data retrieval. - Xavier Cousin; Thierry Hotelier; Philippe Liévin; Jean-Pierre Toutant; Arnaud Chatonnet (Nucleic Acids Res., 1996)

The alpha/beta fold family of proteins database and the cholinesterase gene server ESTHER. - Xavier Cousin; Thierry Hotelier; Kurt Giles; Philippe Liévin; Jean-Pierre Toutant; Arnaud Chatonnet (Nucleic Acids Res., 1997)