Complete CV




Transition from copper to fiber broadband: the role of connection speed and switching costs, 

with Maude Hasbi and Julienne Liang, Information Economics and Policy, in press.


Infrastructure deficiencies and adoption of mobile money in Sub-Saharan Africa

with Onkokame Mothobi, Information Economics and Policy, in press.


The impact of online sales on consumers and firms - Evidence from consumer electronics,

with Nestor Duch-Brown, Frank Verboven and Andre Romahn, International Journal of Industrial Organization, 2017, Vol.52, pp. 30-62.

Substitution between fixed-line and mobile access: the role of complementarities

with Frank Verboven, Journal of Regulatory Economics, 2016, 49(2), pp. 113-151.

The role of network effects and consumer heterogeneity in the adoption of mobile phones: evidence from South Africa,
Telecommunications Policy, 2015, 39(11), pp. 933–943.

Estimating demand for fixed-mobile bundles and switching costs between tariffs

with Julienne Liang, Information Economics and Policy, 2015, 33, pp. 1–10.

Market definition of broadband Internet services in Slovakia: are fixed and mobile in the relevant market? 

with Rainer Nitsche, Lars Wiethaus and Frank Verboven, Information Economics and Policy, 2014, 28, pp. 39-56.

Fixed-to-mobile substitution in the European Union,
Telecommunications Policy, 2014, 38(7), pp. 601-612.

Estimating broadband diffusion in the EU using NUTS1 regional data

with Magali Dauvin, Telecommunications Policy, 2014, 38(1), pp. 96-104.

Dynamic duopoly competition with switching costs and network externalities

with Toker Doganoglu, Review of Network Economics, 2013, 12(1), pp.1-25

Screening competition in mobile telephony,
Applied Economics, 2011, 43(17), pp.2155-2163

Estimating network choices and switching costs in mobile telephony

with Pedro Pereira, Review of Industrial Organization, 2011, 38(1), pp.23-42

Hedonic study on mobile telephony market in France: price-quality strategies

with Chiraz Karamti, Netnomics, 2010, 11(3), pp.255-289

Competition in mobile telephony in France and Germany, 

with Chiraz Karamti, Manchester School, 2010, 78(6), pp.702-724

The consumer welfare loss of minimum charges in mobile telephony

with Pedro Pereira, Telecommunications Policy, 2009, 33(3-4), pp. 200-206

Complementarity between calls and messages in mobile telephony

with Pedro Pereira Information Economics and Policy, 2008, 20(3), pp.279-287

Estimating switching costs in the mobile telecommunications industry in the UK,

Journal of Industry, Competition and Trade, 2008, 8(2), pp.113-132

The impact of regulation on the retail prices in fixed-line telephony across the European Union,

Telecommunications Policy, 2008, 32(2), pp.131-144

The competitiveness of mobile telecommunications industry across the European Union,

International Journal of the Economics of Business, 2008, 15(1), pp.99-115

Simulation of merger in mobile telephony in Portugal

with Pedro Pereira, Review of Industrial Organization, 2007, 31(3), pp.205-220

Estimating network effects in the mobile telecommunications industry in Germany

with Toker Doganoglu, Information Economics and Policy, 2007, 19(1), pp.65-79

Regulation of mobile telephony across the European Union: an empirical analysis,

Journal of Regulatory Economics, 2005, 28(1), pp.47-67


Working papers

International price differences in online markets - Evidence from portable computers, 

with Nestor Duch-Brown, Frank Verboven and Andre Romahn

Unbundling the incumbent and entry into fiber - Evidence from France, 

with Maude Hasbi and Marc Bourreau

Impact of competition and regulation on prices of mobile services: Evidence from France, 

with Ambre Nicolle and Christine Zulehner

Impact of Internet on the pricing of CD titles in France, 

with Marc Bourreau and Francois Moreau 


Current appointment

since 01.2012: Associate Professor, Telecom ParisTech


Other affiliation

since 01.2012: A/Professor, School of Economics, University of Cape Town



06.2015: Habilitation (HDR), Universite Paris 1 Pantheon-Sorbonne
07.2005: Ph.D. Economics, University of Munich
10.2000: M.Sc. Warsaw School of Economics