@conference{nishimura2018device, title = {Device-Specific Distortion Observed in Portable Devices Available for Recording Device Identification}, author = {Nishimura, Akira}, booktitle = {Audio Engineering Society Convention 144}, month = {May}, year = {2018}, url = {https://www.aes.org/e-lib/browse.cfm?elib=19472} }