Enquiries should be addressed to Ewgenij Proschak.
If you have questions concerning the details of the program, please consult the manual and publication.
E. Proschak, J.K. Wegner, A. Schüller, G. Schneider, U. Fechner; Molecular Query Langage (MQL) - A context-free grammar for substructure matching, J. Chem. Inf. Model. 47,(2), 295-301, 2007.