Filtered-out sources (irrelevant to Gershtein) / Отфильтрованные источники (нерелевантные Герштейну)
Of the 55 URLs Perplexity returned, the 5 below were judged unrelated to Mikhail B. Gershtein himself or his work and were therefore excluded from the corpus. They are kept here for traceability only.
| # | URL | Reason it was filtered out |
|---|---|---|
| 1 | https://ru.yamaha.com/ru/about-yamaha/yasm/ | Yamaha music school in Moscow — false-positive from a "Yamaha-Soyuz" string match. |
| 2 | https://artsmoscow.ru/artists/aleksey-rybnikov | Aleksey Rybnikov composer biography — surfaced via "Rybnikov" co-occurrence, no Gershtein content. |
| 3 | https://ru.wikipedia.org/wiki/%D0%A1%D0%B0%D1%85%D0%B0%D1%80%D0%BE%D0%B2,_%D0%90%D0%BD%D0%B4%D1%80%D0%B5%D0%B9_%D0%94%D0%BC%D0%B8%D1%82%D1%80%D0%B8%D0%B5%D0%B2%D0%B8%D1%87 | A. D. Sakharov Wikipedia page — likely surfaced from a Sakharov-era physics tangent in the dialog, no Gershtein content. |
| 4 | https://www.tiktok.com/@bednovcovers/video/7193719311377222918 | TikTok cover song "Ваше благородие" — co-occurrence of unrelated music tag, no Gershtein content. |
| 5 | https://polpred.com/news?wregion=23&fo=1 | Russian Central Federal District news aggregator landing page — no Gershtein content visible. |
- 1 YouTube video unavailable at the time of download:
nuiQhQ1Ap2s(geo/age-restricted or removed). - 2 paywalled book sources skipped:
lib-dpr.ru(initially returned HTTP 0; on retry returned 23 KB stub — kept inbooks/catalog_pages/but content not paywalled-bypassed).ast.ru(publisher catalog — original URL 404; retried via search page, 163 KB landing kept inbooks/catalog_pages/).