- gem.wiki Kamenny_Log-Perm_Oil_Pipeline
- en.wikipedia.org Lipetsk
- cybo.com RU-biz/мост-через-каменный-лог_1d
- musicnewsfirst.com in-lipetsk-a-schoolboy-fell-…
- stuklopechat.com puteshestviya/94277-lipeck-…
- http://paeas.ru Articleen/24
- wikidata.org wiki/Q4211262
- gm.destinationsae.com 1487-30-main-attractions-of…
- researchgate.net publication/344091417_…In addition, in Lipetsk. itself there are regional natural monuments: "Lower Park", "Upper Park" and the lower reaches of the. Kamenny Log.