AUTHOR=Dapor Maurizio TITLE=Mermin Differential Inverse Inelastic Mean Free Path of Electrons in Polymethylmethacrylate JOURNAL=Frontiers in Materials VOLUME=2 YEAR=2015 URL=https://www.frontiersin.org/journals/materials/articles/10.3389/fmats.2015.00027 DOI=10.3389/fmats.2015.00027 ISSN=2296-8016