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<div>One continuing concern is that blended journals, i.e. gold OA for some articles only, are not very efficient means of making OA articles visible. We have no standard means of noting at the journal level or in abstracting and indexing services or services
such as google scholar which articles in a journal are open access, which can be openly harvested for textmining, for example. This has to be addressed if gold OA is to fulfill the many functions funders and policy makers anticipate as benefits.</div>
<div>Chuck Hamaker</div>
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