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Modeling zero response data from willingness to pay surveys : a semi-parametric estimation
Yoo, Seung-hoon, (2001)
Modeling zero response data from willingness to pay surveys - A semi-parametric estimation
Yoo, Seung-Hoon, (2001)
A constructive approach to air-quality valuation in Korea
Kwak, Seung-Jun, (2001)