Gebhardt, Gary F.: - Gary F. Gebhardt is Associate Professor of Marketing at HEC Montreal. He is the co-author of Resurgence: The Four Stages of Market-Focused Reinvention. He teaches marketing strategy, market-focused innovation, B2B and channel marketing in the MBA, MSc, and McGill-HEC Montreal EMBA programs. He worked as a consultant and executive in industry for thirteen years before earning his PhD in Marketing at Northwestern's Kellogg School of Management.