SwissSidechain: a molecular and structural database of non-natural sidechains.
Gfeller D, Michielin O, Zoete V.
Nucleic Acids Res. 2012
http://nar.oxfordjournals.org/content/early/2012/10/25/nar.gks991.abstract

SwissBioisostere: a database of molecular replacements for ligand design
Matthias Wirth; Vincent Zoete; Olivier Michielin; Wolfgang H. B. Sauer
Nucleic Acids Res. 2012
http://nar.oxfordjournals.org/content/early/2012/11/16/nar.gks1059.abstract