Art painting of Levitsky became Kuznetsov's first significant research subject and resulted in his thesis, "Official prohibitions in the work of D. G. Levitzky.
[1] His further research work has included paintings of Jan Chrucki,[2] Alexander Brullov,[3] William Heste and Adam Menelaws.
Between 1990 and 2000 he reviewed Saint Petersburg art exhibitions for the magazines «Итоги» and «Арт-хроника» and newspapers «Российская культура» and «Время новостей».
[6] In 2008, he defended his doctor of historical sciences dissertation on the subject «Государственная и меценатская деятельность рода Строгaновых в имперский период» (State and patronal activity of Stroganovs during the imperial period).
[8] New edition of this book with title '500 years of Strogonov' published in 2012 with special part about Marino estate of Sophia Stroganov near St. Petersburg.