Helmuth Cremer, “Concurrence et service public dans le secteur postal ”, in Economie Postale: les Fondements, Joëlle Toledano (ed.), Paris: Economica, 2004, pp. 7–13.
Helmuth Cremer, Bernard Roy, Joëlle Toledano, and Étienne de Villemeur, “Optimal Pricing and Price-Cap Regulation in the Postal Sector”, Journal of Regulatory Economics, vol. 24, n. 1, July 2003, pp. 49–62.
Helmuth Cremer, Jean-Pierre Florens, André Grimaud, Sarah Marcy, Bernard Roy, and Joëlle Toledano, “Entry and Competition in the Postal Market: Fondations for the Construction of Entry Scenarios”, Journal of Regulatory Economics, vol. 19, n. 2, March 2001, pp. 107–121.
Helmuth Cremer, Farid Gasmi, André Grimaud, and Jean-Jacques Laffont, “Universal Service: an Economic Perspective”, Annals of Public and Cooperative Economics, vol. 72, n. 1, March 2001, pp. 5–43.
Helmuth Cremer, André Grimaud, and Jean-Jacques Laffont, “The Cost of Universal Service in the Postal Sector”, in Current Directions in Postal Reform, Michael A. Crew, and Paul R. Kleindorfer (eds.), Springer, series “Topics in Regulatory Economics and Policy”, vol. 35, chapter 3, 2000, pp. 47–68.
Helmuth Cremer, André Grimaud, and Marc de Rycke, “Costs and Benefits of Universal Service Obligations in the Postal Sector”, in Managing Change in the Postal and Delivery Industries, Michael A. Crew, and Paul R. Kleindorfer (eds.), Springer, series “Topics in Regulatory Economics and Policy”, vol. 25, chapter 2, 1997, pp. 22–41.
Catherine Cazals, Jean-Pierre Florens, Séverine Rouzaud, and Marc de Rycke, “Scale Economies and Natural Monopoly in the Postal Delivery: Comparison between Parametric and Non Parametric Specifications”, in Managing Change in the Postal and Delivery Industries, Michael A. Crew, and Paul R. Kleindorfer (eds.), Springer, series “Topics in Regulatory Economics and Policy”, vol. 25, chapter 4, 1997, pp. 65–82.
Helmuth Cremer, André Grimaud, and Marc de Rycke, “Service Quality, Competition and Regulatory Policies in the Postal Sector”, Journal of Regulatory Economics, vol. 11, 1997, pp. 5–19.