: Older editions and teacher-focused manuals are sometimes archived in university repositories, such as the NMU Library, which hosts the 1981 "Sbornik Zadach". Tips for Finding Specific Solutions
: Platforms like VK (Soviet Textbooks group) often share scans and manual solutions for classic Soviet-era problem books.
: Copy a unique part of the problem's text into a search engine. Many problems from Demkovich are also used in other collections or discussed on physics forums.
Since a unified GDZ website for this specific author is rare, if you are stuck on a particular problem:
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