2件 （「Language and Speech」）

Speech Characteristics of Patients with Parkinson’s Disease: I. Intensity, Pitch, and Duration 論文

Gerald J. Canter ·1963-08-01 ·『Journal of Speech and Hearing Disorders』　28(3)　pp. 221-229

doi:10.1044/jshd.2803.221

Maximum Duration of Phonation 論文

Paul H. Ptacek・Eric K. Sander ·1963-05-01 ·『Journal of Speech and Hearing Disorders』　28(2)　pp. 171-182

doi:10.1044/jshd.2802.171