Harvard University | Columbia University | Yale University | University of Paris | New York University | Stanford University | Princeton University | University of Cambridge | University of Pennsylvania | University of Michigan | University of Chicago | University of California, Berkeley | University of Toronto | Cornell University | University of Oxford | University of London | University of Oslo | Cambridge University | University of Southern California | McGill University | Johns Hopkins University | Northwestern University | University of California | Brown University | University of Queensland | University of Minnesota | University of Washington | University of Notre Dame | University College London | Duke University |
He held academic positions in MG University, Kottayam and Mangalore University in India and also served abroad in various foreign universities, notable among them being the Institute of Oriental Studies, Moscow University, School of Oriental and African Studies, University of London and Tokyo University of Foreign Studies.