A New Portable Photoelectric Plethysmograph

Shunshiro Kondo, Kazuo Takenouchi, Yuzo Endo
1952 JAPANES JOURNAL OF MEDICAL INSTRUMENTATION  
doi:10.4286/ikakikaigakuzassi.revival11.0_6 fatcat:seudlqfavrc7beewagdtxmvnzq