Spady, R. H. (1979). Econometric estimation of cost functions for the regulated transportation industries. Garland Pub..
Citace podle Chicago (17th ed.)Spady, Richard H. Econometric Estimation of Cost Functions for the Regulated Transportation Industries. New York: Garland Pub., 1979.
Citace podle MLA (8th ed.)Spady, Richard H. Econometric Estimation of Cost Functions for the Regulated Transportation Industries. Garland Pub., 1979.
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