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Produzioni congiunte, economie di scopo e costi sommersi nell'impresa agraria multiprodotto
Pilati, Luciano, (2000)
Sozioökonomie des Ehrenamtes : Theorie der nicht-entlohnten, haushaltsextern organisierten Produktion
Erlinghagen, Marcel, (2000)
On the multi-preference approach to evaluating opportunities
Nehring, Klaus, (1999)
A theory of diversity
Continuous extensions of an order on a set to the power set
Nehring, Klaus, (1996)