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Duggal, Vijaya G.; Saltzman, Cynthia; Klein, Lawrence R. Infrastructure and productivity: an extension to private infrastructure and it productivity. (English) Zbl 1247.91135 J. Econom. 140, No. 2, 485-502 (2007). MSC: 91B82 PDF BibTeX XML Cite \textit{V. G. Duggal} et al., J. Econom. 140, No. 2, 485--502 (2007; Zbl 1247.91135) Full Text: DOI