Here is the list of all the sources used for the Defragged History YouTube series, The Kursk.
Books
Clyde Burleson, Kursk Down: The Shocking True Story of the Sinking of a Russian Nuclear Submarine, 2002, 2008 edition, New York, Warner Books. e-book.
Robert Moore, The Kursk; Putin’s First Crisis and the Russian Navy’s Darkest Hour, 2002, 2018 edition, Transworld Publishers. e-book.
Peter Truscott, Kursk: Russia’s Lost Pride, 2002, London, Simon & Schuster. Print.
Ramsey Flynn, Cry from the Deep, The Sinking of the Kursk, the Submarine Disaster That Riveted the World and Put the New Russia to the Ultimate Test, 2004, New York, HarperCollins. e-book.
Рязанцев Валерий Дмитриевич (Ryazantsev, Valery Dmitrievich), В кильватерном строю за смертью. Почему погиб “Курск” (In the Wake Formation for Death, Why did Kursk Die?), 2005, 2017 Moscow, Yauza.
Articles
Amundsen, Ingar; Lind, Bjørn; Reistad, Ole; Gussgaard, Knut; Iosjpe, Mikhail; Sickel, Morten (2001). “The Kursk Accident“. Norwegian Radiation Protection Authority, StrålevernRapport 2001:5
Peter Davidson Principal Safety Consultant, NNC Ltd, Huw Jones Commander, Royal Navy, John H Large Large & Associates, Consulting Engineers, The Nuclear Hazards of the Recovery of the Nuclear Powered Submarine Kursk.
http://news.bbc.co.uk/2/hi/1627014.stm
http://news.bbc.co.uk/2/hi/europe/1113820.stm
http://news.bbc.co.uk/2/hi/europe/1261824.stm
http://news.bbc.co.uk/2/hi/europe/1329643.stm
http://news.bbc.co.uk/2/hi/europe/1336610.stm
http://news.bbc.co.uk/2/hi/europe/1420165.stm
http://news.bbc.co.uk/2/hi/europe/1426312.stm
http://news.bbc.co.uk/2/hi/europe/1484114.stm
http://news.bbc.co.uk/2/hi/europe/1499026.stm
http://news.bbc.co.uk/2/hi/europe/1500276.stm
http://news.bbc.co.uk/2/hi/europe/1510074.stm
http://news.bbc.co.uk/2/hi/europe/1530422.stm
http://news.bbc.co.uk/2/hi/europe/1541763.stm
http://news.bbc.co.uk/2/hi/europe/1591392.stm
http://news.bbc.co.uk/2/hi/europe/1602905.stm
http://news.bbc.co.uk/2/hi/europe/1611939.stm
http://news.bbc.co.uk/2/hi/europe/1616102.stm
http://news.bbc.co.uk/2/hi/europe/1619190.stm
http://news.bbc.co.uk/2/hi/europe/1621308.stm
http://news.bbc.co.uk/2/hi/europe/1628803.stm
http://news.bbc.co.uk/2/hi/europe/1646276.stm
http://news.bbc.co.uk/2/hi/europe/1686925.stm
http://news.bbc.co.uk/2/hi/europe/1740319.stm
http://news.bbc.co.uk/2/hi/europe/1776481.stm
http://news.bbc.co.uk/2/hi/europe/1778149.stm
http://news.bbc.co.uk/2/hi/europe/1815143.stm
http://news.bbc.co.uk/2/hi/europe/1827653.stm
http://news.bbc.co.uk/2/hi/europe/1952905.stm
http://news.bbc.co.uk/2/hi/europe/2016178.stm
http://news.bbc.co.uk/2/hi/europe/2153484.stm
http://news.bbc.co.uk/2/hi/europe/2164783.stm
http://news.bbc.co.uk/2/hi/europe/2247421.stm
http://news.bbc.co.uk/2/hi/europe/3144835.stm
http://news.bbc.co.uk/2/hi/europe/3194257.stm
http://news.bbc.co.uk/2/hi/europe/879706.stm
http://news.bbc.co.uk/2/hi/europe/882574.stm
http://news.bbc.co.uk/2/hi/europe/885469.stm
http://news.bbc.co.uk/2/hi/europe/890712.stm
http://news.bbc.co.uk/2/hi/europe/890921.stm
http://news.bbc.co.uk/2/hi/europe/891156.stm
http://news.bbc.co.uk/2/hi/europe/892365.stm
http://news.bbc.co.uk/2/hi/europe/894597.stm
http://news.bbc.co.uk/2/hi/europe/901841.stm
http://news.bbc.co.uk/2/hi/europe/978192.stm
http://news.bbc.co.uk/2/hi/europe/994773.stm
http://news.bbc.co.uk/2/hi/events/newsnight/1484373.stm
http://news.bbc.co.uk/2/hi/not_in_website/syndication/monitoring/media_reports/895895.stm
http://news.bbc.co.uk/2/hi/not_in_website/syndication/monitoring/media_reports/2155808.stm
http://news.bbc.co.uk/2/hi/science/nature/1478198.stm
http://news.bbc.co.uk/2/hi/uk_news/1591994.stm
http://news.bbc.co.uk/2/hi/uk_news/england/2798465.stm
http://news.bbc.co.uk/2/hi/uk_news/scotland/1415529.stm
http://news.bbc.co.uk/2/hi/uk_news/scotland/1425061.stm
http://news.bbc.co.uk/2/hi/world/monitoring/media_reports/993944.stm
https://www.bbc.co.uk/programmes/p03js2y5
https://www.bbc.co.uk/sounds/play/p008zr92
https://www.bbc.co.uk/sounds/play/p008zrb5
https://www.bbc.com/news/world-europe-41485883
https://www.bbc.com/news/world-europe-48858781
http://www.bbc.co.uk/science/horizon/2000/kursk_transcript.shtml
https://www.vox.com/2020/3/10/21173493/putin-russia-president-term-limits-coronavirus
http://geology.about.com/library/weekly/aa012801a.htm
http://nucnews.net/nucnews/2000nn/0008nn/000818nn.htm
http://russ-history.blogspot.com/2015/08/submarine-kursk-auses.html
http://usatoday30.usatoday.com/news/world/2001-02-26-kursk.htm
https://abcnews.go.com/International/story?id=82823&page=1&singlePage=true
https://bellona.org/news/nuclear-issues/accidents-and-incidents/2000-11-kursk-accident-time-line
https://theintercept.com/2019/05/29/russia-submarine-kursk-norway-nsa/
https://www.gazeta.ru/komanda.shtml
https://www.independent.co.uk/news/world/europe/hope-lost-at-the-undersea-tomb-711678.html
https://www.irishtimes.com/news/soaked-letter-tells-last-hours-of-kursk-crew-1.1112366
https://www.latimes.com/archives/la-xpm-2000-oct-30-mn-44252-story.html
https://www.nytimes.com/2000/10/27/world/none-of-us-can-get-out-kursk-sailor-wrote.html
https://www.rt.com/news/312260-families-crew-kursk-submarine/
https://www.scotsman.com/news/how-scots-played-key-role-raising-kursk-2467820
https://www.theguardian.com/books/2002/aug/24/highereducation.kursk
https://www.theguardian.com/world/2000/aug/22/kursk.russia
https://www.theguardian.com/world/2000/aug/25/kursk.russia2
https://www.theguardian.com/world/2000/oct/27/kursk.russia
https://www.theguardian.com/world/2001/aug/05/kursk.russia
https://www.theguardian.com/world/2003/aug/31/kursk.russia
https://www.theguardian.com/world/2000/aug/17/kursk.russia3
https://www.themoscowtimes.com/archive/and-horror-cuts-our-souls-in-two
https://yenra.com/russian-submarines/kursk/
Web.archive
https://web.archive.org/web/20030627002128/http://www.cdi.org/russia/211-11.cfm
https://web.archive.org/web/20110519220025/http://www.sptimesrussia.com/story/14499
https://web.archive.org/web/20110613145702/http://www.russiajournal.com/node/8634
https://web.archive.org/web/20130928075915/http://www.sptimes.ru/index.php?action_id=2&story_id=7719
https://web.archive.org/web/20140308190201/http://sptimes.ru/story/9371?page=1
https://web.archive.org/web/20151117092839/http://news.bbc.co.uk/2/hi/europe/978192.stm
Wikipedia Pages
https://military.wikia.org/wiki/Kursk_submarine_disaster
https://en.wikipedia.org/wiki/USS_Grayling_(SSN-646)
https://en.wikipedia.org/wiki/Submarine_incident_off_Kola_Peninsula
https://en.wikipedia.org/wiki/Submarine_incident_off_Kildin_Island
https://www.wikiwand.com/en/Kursk_submarine_disaster
Video
https://nos.nl/video/292789-vandaag-10-jaar-geleden-dat-de-koersk-geborgen-werd.html