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http://dx.doi.org/10.1016/0960-8524(95)00110-7DOI Link
http://www.sciencedirect.com/science/article/pii/0[...]11/08/2012
http://ac.els-cdn.com/0960852495001107/1-s2.0-0960[...]11/14/2016PDF ReaderItem is within a limited-access website