Subscription Choices and Switching Costs in Mobile Telephony
Lukasz Grzybowski, Pedro Pereira
Review of Industrial Organization, vol. 38, 2011, p. 23-42.

The consumer loss of the minimum duration for mobile telephone calls
Lukasz Grzybowski, Pedro Pereira
Telecommunications Policy, vol. 33, 2009, p. 200-206.

The Complementarity between Calls and Messages in Mobile Telephony
Lukasz Grzybowski, Pedro Pereira
Information Economics and Policy, vol. 20, 2008, p. 279-287.

Merger Simulation in Mobile Telephony in Portugal
Lukasz Grzybowski, Pedro Pereira
Review of Industrial Organization, vol. 31, 2007, p. 205-220.