@conference{jensen1986a, title = {A New Principle for a High Efficiency Power Audio Amplifier for Use with a Digital Preamplifier}, author = {Jensen, Jørgen Arendt}, booktitle = {Audio Engineering Society Convention 80}, month = {Mar}, year = {1986}, url = {https://www.aes.org/e-lib/browse.cfm?elib=5084} }