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Calculating the cost of the universal service obligation : the need for a global approach
Jaag, Christian; Koller, Martin; Trinkner, Urs Walter … - In: Progress in the competitive agenda in the postal and …, (pp. 113-127). 2009
Persistent link: https://www.econbiz.de/10003838581
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Cost efficiency measurement in postal delivery units
Filippini, Massimo; Koller, Martin - In: Essays on efficiency measurement in network industries. 2012
Persistent link: https://www.econbiz.de/10009750812
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Economies of scale and scope in postal outlets
Filippini, Massimo (contributor); Koller, Martin (contributor) - In: Essays on efficiency measurement in network industries. 2012
Persistent link: https://www.econbiz.de/10009750814
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Postal markets and electronic substitution : what is the impact of intermodal competition on regulatory practices and institutions?
Maegli, Martin; Jaag, Christian; Koller, Martin; … - In: Competition and regulation in network industries : CRNI 11 (2010) 4, pp. 382-397
Persistent link: https://www.econbiz.de/10008759275
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Essays on efficiency measurement in network industries
Koller, Martin - 2012
Persistent link: https://www.econbiz.de/10009736499
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Economics of scale and scope in postal outlets under consideration of unobserved heterogeneity
Filippini, Massimo; Koller, Martin - In: Annals of public and cooperative economics 83 (2012) 4, pp. 435-443
Persistent link: https://www.econbiz.de/10010220105