A distance friction minimization approach in data envelopment analysis: A comparative study on airport efficiency. - Soushi Suzuki; Peter Nijkamp; Piet Rietveld; Eric Pels (Eur. J. Oper. Res., 2010)

The User Costs of Air Travel Delay Variability. - Paul Koster; Eric Pels; Erik Verhoef (Transp. Sci., 2016)