During this period he spent one year as a visiting professor at the University of Maryland and was honoured by being elected a corresponding member of the Mainz Academy.
Panahon na ito siya na ginugol ng isang taon bilang isang pagbisita sa propesor sa University of Maryland at noon ay pinarangalan sa pamamagitan ng pagiging elected isang nararapat na miyembro ng Mainz Academy.