Tibor Mandjak is active Professor Emeritus at the University of ELTE Eötvös Lóránd in Budapest. His research activities are concerning inter-organizational issues, phases and development of business relationships, embeddedness of business in extended networks, port marketing and project marketing. He is interested in the relations between IMP approach and economic sociology. Business paradigm is one of the new focuses of his research. His work is published in, among others, Industrial Marketing Management, Journal of Business and Industrial Marketing, The IMP Journal, Transport Policy, International Journal of Entrepreneurship and Innovation, Supply Chain Forum: An International Journal.