@article{wortman1950heated, title = {Heated Stylus Recording Techniques}, author = {Wortman, Leon A.}, journal = {J. Audio Eng. Soc}, volume = {0}, number = {1}, pages = {24, 42}, year = {1950}, url = {https://www.aes.org/e-lib/browse.cfm?elib=17803} }