From Barbara I. Dewey, Dean of The Pennsylvania State University Libraries

License

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1. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
2. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal. Further distribution of the work must maintain attribution to the author(s) and the published work's title, journal citation, and DOI (digital object identifier).
3. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
4. The work does not infringe any copyright; violate any other right of any third parties; contain any scandalous, libelous, or unlawful matter; or make any improper invasion of the privacy of any person. The author(s) agrees to indemnify and hold harmless The Pennsylvania State University against any claim or proceeding undertaken on any of the aforementioned grounds.