

This is from their putindoc page
References:
*Frontline Documentary link to pbs website: **http://www.pbs.org/wgbh/frontline/film/putins-way/%C2%A0
* Luke Harding, A Very Expensive Poison: The Assassination of Alexander LItvinenko and Putin’s War with the West (London, Guardian Books, 2016)
*Alexander Litvinenko & Yuri Felshtinsky, Blowing Up Russia: The Secret Plot to Bring Back KGB Terror(Encounter Books, published 2007 after Litvinenko’s murder)
*Mikhail Zygar, All the Kremlin’s Men: Inside the Court of Vladimir Putin (Perseus Books, 2016)
* 1 http://nypost.com/2017/07/03/putins-old-boss-says-he-was-a-mediocre-kgb-spy/
* 2 http://www.bbc.com/news/magazine-32066222
* 3 http://www.nytimes.com/2000/02/21/world/aa-sobchak-dead-at-62-mentor-to-putin.html
* 4 http://articles.latimes.com/1991-12-23/news/mn-718/_1/_world-war
* 5 https://www.pri.org/stories/2015-01-13/five-corrupt-moves-helped-make-putin-most-powerful-man-russia
* 6 http://articles.latimes.com/2010/mar/21/world/la-fg-russia-putin21-2010mar21 (6)
* 7 https://www.theguardian.com/world/2012/mar/28/marina-salye (7)
* 8 https://www.vanityfair.com/news/2000/10/putin200010
* 9 https://data.occrp.org/text/2573023?dq=&page=1
* 10 https://www.theguardian.com/world/2016/jan/19/alexander-litvinenko-the-man-who-solved-his-own-murder
* 16 https://www.theguardian.com/lifeandstyle/2008/jan/26/weekend.adrianlevy
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