1
Published in 1980
doi: 10.1016/0301-9268(80)90034-0
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conference paper or compendium article online
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3
Published in 1980
doi: 10.1016/0301-9268(80)90003-0
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journal article online
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7
13
18
19
Published in 1981
doi: 10.1016/0016-7037(81)90160-5
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journal article online
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20
Published in 1982
doi: 10.1139/e82-082
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journal article online
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