- wallmine.com otc/rosn/officer/2092558/andrey-…
- dribbble.com plkv
- bloomberg.com news/articles/2021-12-29/firefly-…
- proekt5a.ru tr/
- researchgate.net scientific-contributions/RN-…
- whatclinic.com obstetrics-gynaecology/australia/…
- facebook.com vladimir.polyakov.923/
- go4worldbusiness.com member/view/81936/pavel-…
- en.wikipedia.org Nikolay Polyakov