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Reducing urban public transport costs by tendering lots : a panel data estimation
Croissant, Yves, (2013)
On the calculation of scale economies from transport cost functions
Jara Díaz, Sergio R., (1996)
Number of points served and economies of spatial scope in transport cost functions
Jara Díaz, Sergio R., (2001)
Orderamarts: A class of asymptotic martingales
Ghoussoub, N., (1979)
Summability and vector amarts
Variational representations for N-cyclically monotone vector fields
Galichon, Alfred, (2012)