@misc{26726, author = {Eric Lemmon and Marcia Huber and Mark McLinden}, title = {NIST Standard Reference Database 23: Reference Fluid Thermodynamic and Transport Properties-REFPROP, Version 9.1}, year = {2013}, month = {2013-05-07}, publisher = {Natl Std. Ref. Data Series (NIST NSRDS), National Institute of Standards and Technology, Gaithersburg, MD}, url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=912382}, language = {en}, }