Roberts, David The elementary construction of formal anafunctors These notes give an elementary and formal 2-categorical construction of the bicategory of anafunctors, starting from a 2-category equipped with a family of covering maps that are fully faithful. anafunctors;2-categories;localization;formal category theory;Category Theory, K Theory, Homological Algebra 2018-08-10
    https://adelaide.figshare.com/articles/journal_contribution/The_elementary_construction_of_formal_anafunctors/6953318
10.25909/5b6cfd1a73e55