This Perspective argues that when authors or funders pay the full cost of publishing a scientific or scholarly journal article in an open access journal, the terms of reuse should require only attribution to some combination of the author(s), the original publisher, and the funder. Publications that charge authors and their financial backers the full cost of publication and then add other reuse restrictions are not fully open access publications.
Carroll, Michael W., "Why Full Open Access Matters" (2011). Joint PIJIP/TLS Research Paper Series. 45.