Bootstrapped efficiency estimates for a model for groups and hierarchies in DEA. - Matthias Staat (Eur. J. Oper. Res., 2002)

Hedonic price function estimation in economics and marketing: revisiting Lancaster's issue of "noncombinable" goods. - Ruben Chumpitaz; Kristiaan Kerstens; Nicholas Paparoidamis; Matthias Staat (Ann. Oper. Res., 2010)

Comparing efficiency across markets: An extension and critique of the methodology. - Ruben Chumpitaz; Kristiaan Kerstens; Nicholas Paparoidamis; Matthias Staat (Eur. J. Oper. Res., 2010)

Integrating categorical variables in Data Envelopment Analysis models: A simple solution technique. - Gerrit Löber; Matthias Staat (Eur. J. Oper. Res., 2010)