2
Published in 1998
doi: 10.1016/S0375-6742(97)00035-6
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conference paper or compendium article online
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3
Published in 1998
doi: 10.1016/S0009-2541(98)00013-8
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journal article online
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20
Published in 2001
doi: 10.1016/S0009-2541(00)00284-9
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journal article online
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