Cremer, Helmuth, De Donder, Philippe and Rodriguez, Frank (2002) Funding the Universal Service Obligation Under Liberalisation. In: Postal and Delivery Services: Pricing, Productivity, Regulation and Strategy Crew, Michael A. and Kleindorfer, Paul R. (eds.) Springer US. Series “Topics in Regulatory Economics and Policy”, Vol. 41. pp. 31-53. ISBN 978-1-4613-0253-7

Florens, Jean-Pierre, Marcy, Sarah and Toledano, Joëlle (2002) Mail Demand in the Long and Short Term. In: Postal and Delivery Services: Pricing, Productivity, Regulation and Strategy Springer. Series “Topics in Regulatory Economics and Policy”, Vol. 41. Chapter 10. pp. 171-190. ISBN 0-7923-7638-2

Cazals, Catherine, Duchemin, Pascale, Florens, Jean-Pierre, Roy, Bernard and Vialaneix, Olivier (2002) An Econometric Study of Cost Elasticity in the Activities of Post Office Counters. In: Postal and Delivery Services: Pricing, Productivity, Regulation and Strategy Springer. Series “Topics in Regulatory Economics and Policy”, Vol. 41. pp. 161-170. ISBN 978-0-7923-7638-5