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)
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)
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)
@inproceedings(Bier13a,
)
@inproceedings(BBG15a,
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@inproceedings(BBGH15a,
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@article(BrGe15a,
 doi          = {10.1613/jair.4959},
)
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@article(CaKe02c,
 doi          = {10.1007/s003550100128},
)
@article(CaKe03a,
 doi          = {10.1007/s00199-002-0344-1},
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@article(CaKe15a,
 doi          = {10.1016/j.econlet.2015.01.009},
)
@article(CaKe16a,
 doi          = {10.1007/s40505-015-0066-8},
)
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 doi          = {10.1145/2229012.2229035},
)
@article(Dudd14b,
 doi          = {10.1007/s11238-013-9401-4},
)
@article(DuSc00a,
 doi          = {10.1007/PL00007177},
)
@article(BrFi83a,
 doi          = {10.2307/2689808},
)
@article(GeEn11a,
 doi          = {10.1613/jair.3126},
)
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)
@inproceedings(HKM16a,
 doi          = {10.1007/978-3-662-48899-7_31},
)
@article(JPG09a,
 doi          = {10.1007/s00355-008-0360-6},
)
@article(LPMM15a,
 doi          = {10.1007/s10601-015-9183-0},
)
@article(Moul88b,
 doi          = {10.1016/0022-0531(88)90253-0},
)
@article(NuSa17a,
 doi          = {10.1016/j.mathsocsci.2017.02.003},
)
@article(Pere01a,
 doi          = {10.1007/s003550000079},
)
@article(SaZw09a,
 doi          = {10.1007/s00182-009-0170-9},
)
@article(SaZw10a,
 doi          = {10.1007/s00355-012-0654-6},
)
@article(Sato13b,
 doi          = {10.1016/j.jet.2012.12.001},
)
@article(TaLi09a,
 doi          = {10.1016/j.artint.2009.02.005},
)
@book(Tayl05a,
 doi          = {10.1017/CBO9780511614316},
)
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 doi          = {10.1017/CBO9781107446984.003},
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