@conference{marcucci1975variable, title = {Variable Pitch and Depth, It's Latitude and It's Limits}, author = {Marcucci, Ronald R. and Galatioto, Santo C.}, booktitle = {Audio Engineering Society Convention 52}, month = {Oct}, year = {1975}, url = {https://www.aes.org/e-lib/browse.cfm?elib=2371} }