Kaminski, Margot E.; Yanisky-Ravid, Shlomit (2014). "The Marrakesh Treaty For Visually Impaired Persons: Why A Treaty Was Preferable To Soft Law". University of Pittsburgh Law Review75 (3): 259. doi:10.5195/lawreview.2014.338. ISSN0041-9915.
Kaminski, Margot E.; Yanisky-Ravid, Shlomit (2014). "The Marrakesh Treaty For Visually Impaired Persons: Why A Treaty Was Preferable To Soft Law". University of Pittsburgh Law Review75 (3): 259. doi:10.5195/lawreview.2014.338. ISSN0041-9915.