His current research interests include measurement and valuation of intellectual capital (intangible assets), corporate management and reporting of investments in intangibles, and firms' voluntary disclosure of financial and non-financial information. He has published work on these topics in referred academic journals. His recent research results on the usefulness of knowledge-based measures were quoted in Fortune (April 16, 2001), Business Week (June 18, 2001; December/January, 2005/2006), and Harvard Business Review (June, 2004).