From Sherpa: Author's Pre-print: author can archive pre-print (ie pre-refereeing) Author's Post-print: author can archive post-print (ie final draft post-refereeing) Publisher's Version/PDF: author can archive publisher's version/PDF General Conditions: On an institutional website or institutional repository Creative Commons Attribution License 3.0 Authors retain copyright Upon publication must add DOI to entry Must link to abstract on publisher website Publisher's version/PDF may be used Published source must be acknowledged with citation. (from journal website article: New articles in this journal are licensed under a Creative Commons Attribution 4.0 License.) Ver 7.4.2020--MMM. HERDC documentation added to dark upload - HD 5/1/21