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@@ -147,7 +147,7 @@
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(:incollection
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(:description . "A part of a book having its own title.")
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(:required :author :title :booktitle :publisher :year)
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- (:optional :editor (:volume :number) :series :type :chapter :pages :address :edition :month :note))
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+ (:optional :crossref :editor (:volume :number) :series :type :chapter :pages :address :edition :month :note))
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(:inproceedings
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(:description . "An article in a conference proceedings")
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(:required :author :title :booktitle :year)
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