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He was also awarded the JAL Scholarship to attend Summer Session of Asian Studies at Sophia University, Tokyo, Japan when he was a student at Gadjah Mada University.
In retirement he returned to Indonesia with Betty, teaching at Gadjah Mada University in Jakarta and Andalas University in West Sumatra, again on local salaries.
Those universities are the University of Indonesia, the Bandung Institute of Technology, the Institute Technology Sepuluh November, Gadjah Mada University and the Diponegoro University.
ITC has several joint educational programmes with partner institutes in the developing world, for example joint MSc programmes in geo-hazards with the Indian Institute of Remote Sensing in Dehradun, India and Gadjah Mada University in Yogyakarta, Indonesia.
He received the title of Extraordinarius Professor at the University of Indonesia and the Gadjah Mada University, and Doctor Onoris Causa at Aix-Marseille University.