Your search returned the following 2 documents:

2. Protease Inhibitor-Resistant Hepatitis C Virus Mutants With Reduced Fitness From Impaired Production of Infectious Virus
   Tetsuro Shimakami, Christoph Welsch, Daisuke Yamane, David R. McGivern, MinKyung Yi, Stefan Zeuzem, and Stanley M. Lemon
   Gastroenterology 140 (2): 667-675, 2011
   
1. Peptidomimetic Escape Mechanisms Arise via Genetic Diversity in the Ligand-Binding Site of the Hepatitis C Virus NS3/4A Serine Protease
   Christoph Welsch, Tetsuro Shimakami, Christoph Hartmann, Yan Yang, Francisco S. Domingues, Thomas Lengauer, Stefan Zeuzem, and Stanley M. Lemon
   Gastroenterology 142 (3): 654-663, 2012