@article{GDZPPN002449226, title = {Methods for Improving World Transportation Accounts, Applied to 1950 to 1953 - Karreman, H.F.}, journal = {Metrika}, volume = {8}, year = {1964}, pages = {250-250}, url = {http://dml.mathdoc.fr/item/GDZPPN002449226} }
Panzera, A. Methods for Improving World Transportation Accounts, Applied to 1950 to 1953 - Karreman, H.F.. Metrika, Tome 8 (1964) p. 250. http://gdmltest.u-ga.fr/item/GDZPPN002449226/