@article{tsambos2020three, title = {Three-Halves-Power Law Models for Actual Vacuum Tubes}, author = {Tsambos, Panayotis}, journal = {J. Audio Eng. Soc}, volume = {68}, number = {6}, pages = {441--453}, year = {2020}, url = {https://www.aes.org/e-lib/browse.cfm?elib=20860} }