4
Published in 1983
conference paper or compendium article
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9
Published in 1989
conference paper or compendium article
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14
Published in 1990
conference paper or compendium article
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17
Published in 1983
doi: 10.1016/0166-5162(83)90007-1
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18
Published in 1999
doi: 10.1127/ejm/11/4/0691
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