@article{smith1970instant, title = {-Instant- Recording Studios using Prefabricated Acoustical Panels}, author = {Smith, Allan P.}, journal = {J. Audio Eng. Soc}, volume = {18}, number = {1}, pages = {63--66}, year = {1970}, url = {https://www.aes.org/e-lib/browse.cfm?elib=1524} }