6Bianchi,A.,&Phillips,J.G (2005).Psychological predic- tors of problem mobile phone use.Cyberpsychology&Behavior,8 (1),39-51.
7Park,W. Mobile phone addiction. Mobile Communica- tions (2005):253-272.
8Billieux,J.,Van Der Linden,M.,&Rochat,L.The role of impulsivity in actual and problematic use of the mobile phone. Applied Cognitive Psychology, 2008,22(9), 1195-1210.