The Assistant professor of Indology,University tubingen, Germany.
1978-1980 Associate Professor of Sanskrit,Instituut Kern, University of Leiden,The Netherlands
1981-1986 Professor of Sanskrit language and literature University of Leiden,The Netherlands
1986-1987 Visiting Professor of Sanskrit,Harvard University
1987-Harvard University,Wales Professor of Sanskrit,Faculty of Arts and Sciences,Harvard University
1997 Invitation to become Prof of Indology and head of the Department Indology and Iranin Studies,Munich University,Germany,declined,as to remain at Harvard.
1999-President, Association for the Study of Language in Prehistory, Boston
The Home of the Aryans
Indian Philology and South Asian
Das Alte Indien
The World’s Mythologies
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