- en.m.wikipedia.org Trace (TV series)Trace (Russian: След, romanized: Sled) is a Russian crime drama television series about employees of Federal Expert Service ('FES'), the fictional organization.
- http://seasonvar.ru serial-3308--Sled_psajbcg-0-…Bulunamadı: dizi
- videodetective.com show/sled-328825Release year: 2007. Trace is a Russian crime drama television series about employees of Federal Expert Service ('FES'), the fictional organization.
- thetvdb.com series/sled