"Скончался В.А.Залгаллер" (in Russian). Saint Petersburg Lyceum 239. 2 October 2020. Archived from the original on 26 November 2020. Retrieved 3 October 2020.
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"Скончался В.А.Залгаллер" (in Russian). Saint Petersburg Lyceum 239. 2 October 2020. Archived from the original on 26 November 2020. Retrieved 3 October 2020.