Revision history for entry Ignatiev, Konstantin N. (1993). "On strong provability predicates and the associated modal logics" [IGNOSP]

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2016-06-30T08:10:02updateSystem / admin update -
2015-02-05T02:21:39updateSystem / admin update -
2013-11-22T07:07:55updateSystem / admin update -
2011-06-13T18:22:47update