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Characteristics of PVdF copolymer/Nafion blend membrane for direct methanol fuel cell (DMFC) Cho, KY; Eom, Jiyong; Jung, HY; Choi, Nam-Soon; Lee, YM; Park, Jung-Ki; Choi, JH; et al, ELECTROCHIMICA ACTA, v.50, no.2-3, pp.583 - 588, 2004-11 |
Demand for number portability in the Korean telecommunications market: Contingent valuation approach Park, Myeong-Cheol; Kim, Dan J.; Lee, Sang-Woo, JOURNAL OF GLOBAL INFORMATION MANAGEMENT, v.15, no.1, pp.43 - 67, 2007-01 |
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