109
Published in 1981
doi: 10.1306/BF9AB5DE-0EB6-11D7-8643000102C1865D
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110
Published in 1980
conference paper or compendium article
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116
118
Published in 1984
doi: 10.1306/BF9AB624-0EB6-11D7-8643000102C1865D
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