- 2000/04/01 - Professor, Univesity of Hosei
- 1993/04/01 - 2000/03/01 The University of Aizu Aizu Professor of Shape Modeling Lab
- 1989/01/02 - 1993/03/30 Institute of System Analysis, Moscow, Deputy director, Head of computational mechanics department
- 1988/06/03 - 1988/12/30 Institute of Aufomation of Design, Moscow, Leading research assistant
- 1980/08/01 - 1988/06/02 Institute of Applied Mathematics, Moscow, Senior research assistant
- 1976/10/01 - 1980/07/31 Institute of Applied Mathematics, Moscow, Research assistant
- 1971/05/03 - 1976/09/30 Institute of Applied Mathematics, Moscow, Junior research assistant
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