- hdrezka.ag series/crime/15131-sled-2007.html
- en.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
- thetvdb.com series/sled/allseasons/officialSeason 1. S01E01 Эпизод 1. September 3, 2007. Channel One Russia.
- kino.mail.ru series_762875_sled/