Thepurpose of this short article is to simplify goodness-of-fitmethods to obtain qualitative information about returns to scalefor individual observations. Traditional and new goodness-of-fitmethods developed for estimating returns to scale on nonparametricdeterministic reference technologies...

[eng] The impact of short term credit constraints on farms’ profitability. Anonparametric approach.. The impact of credit constraints on the economic performance of farms is evaluated. Following Färe, Grosskopf and Lee (1990), we estimate a nonparametric frontier function maximising profit...

This paper provides a comprehensive survey of the literature on production and cost frontiers for public transit operators, and it evaluates the contributions of frontier analysis to the understanding of the performance of the public transport sector. The authors first succinctly contrast best...