Closed Access logo, derived from PLoS Open Access logo. This version with transparent background.
Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
<a href="//commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg" title="File:Open Access logo PLoS white.svg">File:Open_Access_logo_PLoS_white.svg</a> and own modification