He is the author of Path Integrals on Group manifolds and the co-author of Dose Painting IMRT Using Biological Parameters. Together with Anatoly Pinchuk and Jamey Weichert, he is the inventor of long-lived tumor specific Gadolinium -based agents for imaging and therapy. He has more than 275 articles published in various areas of medical and mathematical physics (cf. PubMed, MATHSCINET), and 10 patents to his credit. In addition, he has been actively involved in a number of AAPM task groups, and the AAPM Working group on Biological Effects of Hypofractionated Radiotherapy/SBRT.