1. , , Solid-State Chemistry of Drugs, 2nd ed., SSCI, West Lafayette, 1999;
2. Polymorphism in Pharmaceutical Solids (Ed.: ), Marcel Dekker, New York, 1999;
3. Polymorphism in Molecular Crystals, Oxford University Press, New York, 2002;
4. Polymorphism in the Pharmaceutical Industry (Ed.: ), Wiley-VCH, Weinheim, 2006.
5. Dealing with the Impact of Ritonavir Polymorphs on the Late Stages of Bulk Drug Process Development