(EN) Masha Gessen, The Man Without a Face: The Unlikely Rise of Vladimir Putin, New York, Riverhead Books, 2012, pp. 196–197, ISBN 978-1-59448-842-9.
«Gessen describes some of the obstacles Kasparov encountered during the attempt to build his campaign: his chartered plane was refused airport access; hotels were advised not to house him; event attendees and organisers were threatened; secret police were a constant presence; a "total television blackout" was enforced. These measures, Gessen concludes, kept the Kasparov movement from growing»