1.     Title:  Tactile resonance sensors in medicine
Author(s):  O. A. Lindahl‌, C. E. Constantinou‌, A. Eklund‌, Y. Murayama‌, P. Hallberg‌ and S. Omata‌
Journal of Medical Engineering & Technology
2009, Vol. 33, No. 4, Pages 263-273 , DOI 10.1080/03091900802491188