Defined in file biblio.asn C++ class: CCitRetract CitRetract ::= SEQUENCE { type ENUMERATED { -- retraction of an entry retracted (1) , -- this citation retracted notice (2) , -- this citation is a retraction notice in-error (3) , -- an erratum was published about this erratum (4) } , -- this is a published erratum exp VisibleString OPTIONAL } -- citation and/or explanation