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Assessing the degree of spot market integration for US natural gas: evidence from daily price data
Cuddington, John T., (2006)
Anonymity, social image, and the competition for volunteers : a case study of the online market for reviews
Wang, Zhongmin, (2010)
A hedonic analysis of crude oil : have environmental regulations changed refiners' valuation of sulfur content?
Wang, Zhongmin, (2002)