Representing receptor flexibility in ligand docking through relevant normal modes.
Cavasotto CN, Kovacs JA, Abagyan RA, J Am Chem Soc, 2005 Jul 6 - link

Protein flexibility in ligand docking and virtual screening to protein kinases.
Cavasotto CN, Abagyan RA, J Mol Biol, 2004 Mar 12 - link