The OAJ movement was initiated in the scientific disciplines but has been picked up by a wide array of fields The earliest formalized document associated with OA is the Budapest Open Access Initiative which was created and signed in 2001Budapest Open Access Initiative The movement has picked up significant momentum in the last several years (Spears & Vyse, 2007) As of September 2009, the Directory of Open Access Journals includes 4359 titles in its holdings Directory of Open Access Journals
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