J. Y. Schipper

Frequency Equilibria in Duopoly Airline Markets

Peter Nijkamp, Piet Rietveld, J. Y. Schipper, 1998 .

Market Structure and Environmental Costs in Aviation

J. Y. Schipper, 1999 .

Deregulation in European Aviation and the Evolution of Hub-and-Spoke Networks: Impacts on the Environment

Piet Rietveld, P. Peeters, J. Y. Schipper, 2005 .