@article{22546, author = {Richard Azuah and S. and M. and H.}, title = {Phonon-Roton Modes of Liquid 4He Beyond the Roton in the Porous Medium MCM-41}, year = {2013}, month = {2013-07-22}, publisher = {Physical Review B}, url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=914968}, language = {en}, }