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 number       = {1},
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 title        = {The Logic of Public Announcements, Common Knowledge, and Private Suspicions},
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 title        = {Information Update as relativisation},
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@book(meyer1995elai,
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 title        = {Distributed Knowledge},
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@book(van2011logical,
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@article(van1999group,
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 year         = {1999},
 title        = {Group knowledge is not always distributed (neither is it always implicit)},
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@article(WA2013pacd,
 author       = {Yi W\'ang and {\r A}gotnes, Thomas},
 year         = {2013},
 title        = {Public announcement logic with distributed knowledge: expressivity, completeness and complexity},
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 volume       = {190},
 number       = {1},
 pages        = {135--162},
 doi          = {10.1007/s11229-012-0243-3},
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