Heartphones: Sensor Earphones and Mobile Application for Non-obtrusive Health Monitoring. - Ming-Zher Poh; Kyunghee Kim; Andrew D. Goessling; Nicholas C. Swenson; Rosalind W. Picard (ISWC, 2009)

Cardiovascular Monitoring Using Earphones and a Mobile Device. - Ming-Zher Poh; Kyunghee Kim; Andrew D. Goessling; Nicholas C. Swenson; Rosalind W. Picard (IEEE Pervasive Comput., 2012)