IFABCInternational Federation of Audit Bureaux of Circulations
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The estimates provided are checked against the data audited by IFABC (2013), ComScore and OJD Interactive to ensure that, regardless of its accuracy, they have the validity needed to establish comparative studies.
La IFABC publico sus Web Measurement Standard para controlar las mediciones de audiencias digitales.
Armada's circulation is audited annually by WEMF, the Swiss member of IFABC (International Federation of Audit Bureaux for Circulation).