Y. Satou

Doppler detection in Ama divers of Japan.

T. Ishitake, K. Kohshi, F. Lemaître, 2014, Wilderness & environmental medicine.

Effect of short-term exposure to whole body vibration in humans: relationship between wakefulness level and vibration frequencies.

Kunio Hara, Mihoko Mori, Tatsuya Ishitake, 2009, The Kurume medical journal.