@conference{christensen2013measuring, title = {Measuring Directional Characteristics of In-Ear Recording Devices}, author = {Christensen, Flemming and Hoffmann, Pablo F. and Hammershøi, Dorte}, booktitle = {Audio Engineering Society Convention 134}, month = {May}, year = {2013}, url = {https://www.aes.org/e-lib/browse.cfm?elib=16784} }