What nationality do both Richard Donchian and Jirair Hovnanian share besides American?
Richard Donchian Richard Davoud Donchian (born September 1905, Hartford, Connecticut – d. 1993) was an Armenian-American commodities and futures trader, and pioneer in the field of managed futures.
Israel Tsvaygenbaum Israel Tsvaygenbaum (Russian: Исраил Иосифович Цвайгенбаум ; Hebrew: ישראל צווייגנבאום‎ ‎ ; born February 1, 1961), is a Russian-American artist of Jewish descent. A number of his works are in the Museum of Imitative Arts, Derbent. Other works can be seen in private collections in different countries, including Austria, Bulgaria, England, France, Netherlands, Israel, Russia and the US.