@article{baade1966instrumentation, title = {Instrumentation Trends for Noise Reduction Work, as Seen by a Mechanical Engineer}, author = {Baade, Peter K.}, journal = {J. Audio Eng. Soc}, volume = {14}, number = {4}, pages = {302--306}, year = {1966}, url = {https://www.aes.org/e-lib/browse.cfm?elib=1135} }