c1 Refereed Journal Article, Server Dragomir signed vuir pt.18/10/11. Not checked in SHERPA 14/6/12 HD.

"opyrightq2010 Kuei-Lin Tseng et al. This is an open access article distributed under the CreativeCommons Attribution License, which permits unrestricted use, distribution, and reproduction inany medium, provided the original work is properly cited" - p. 1 of pdf. File added, LL 19/10/2020. --

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