Out of the Garbage-Pail into the Fire: fuel bricks now added to the list of things salvaged by science from the nation's waste, Popular Science monthly, February 1919, page 50-51, Scanned by Google Books: https://books.google.com/books?id=7igDAAAAMBAJ&pg=PA50
Moore, C. J. (2008). "Synthetic polymers in the marine environment: A rapidly increasing, long-term threat". Environmental Research. 108 (2): 131–139. doi:10.1016/j.envres.2008.07.025. PMID 18949831