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PII: S1550-8307(10)00036-4
doi:10.1016/j.explore.2010.03.002
© 2010 Elsevier Inc. All rights reserved.
PII: S1550-8307(10)00036-4
doi:10.1016/j.explore.2010.03.002
© 2010 Elsevier Inc. All rights reserved.