He survived the Siege of Leningrad, undertaken by the Nazi German Army.

For 44 years, he worked in various factories and scientific research institutes.

He developed and manufactured electrical systems and products.

He had published about thirty papers and three monographs on the specialty and received eight invention certificates.

In 1996, after retiring he became a full-time historian of Russian Jews (1762-1917).

[4] The Jewish question and financial relations between Russia and the West in the late 19th - early 20th century // the Bulletin of the Jewish University in Moscow.

[7] The activities of committees, commissions and meetings on Jewish reforms in Russia in the 19th - early 20th century // "Questions of history".

43–61.<[8] Russian Jews in the projects of "Joint nobility" // "Issues of history".