Master of Laws with honors, People's Friendship University, Moscow, 1973.
Customary court clerk, Victoria Divisional Council, Republic of Cameroon, 1958-1960; clerk to production manager, Lever Brothers (Nigeria) Ltd., Lagos, Nigeria, 1962-1968; lecturer political science, lecturer political law, acting research assistant, U. Helsinki, Finland, 1980; industrial consultant, Mobil Producing Nigeria, Lagos, 1981-1982; assistant chief budget examiner, analyst, Federal Government Nigeria, Lagos, 1982-1987; associate professor public international law, researcher, U. Helsinki, 1987-1990; vice dean, U. Helsinki, since 1995; associate professor private international law and comparative law, University Helsinki, 1991-1998; acting professor international law, University Helsinki, since 1998.
Member International Law Association, Association Attenders Hague Academy International Law, Ius Gentium Association, The Finnish Yearbook International Law (member of advisory board), Institute International Space Law of International Astronautical Federation, FinnishUnion Lawyers, Association Finnish Lawyers, British Interplanetary Society.
Married Leila Mirjam Hakkinen, April 15, 1977. Children: William, Juliana, Christiana, Maiindo Marjiana, Mikael Atabop.