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*Since 1978 worked at Yerevan State University in the Chair of Optics:
* 1978- 1979 as a Senior Laboratory.
* 1979- 1986 as a an Engineer.
* 1986- 1993 as a Researcher.
* 1993- 2000 as a an Assistant.* 2000- 2009 as a an Associate Professor.
* Since 2009 as a Professor.
