Online tissue discrimination for transcutaneous needle guidance applications using broadband impedance spectroscopyTrebbels, Dennis; Min, MartIEEE transactions on biomedical engineering2012 / p. 494-503 : ill https://www.researchgate.net/publication/51798891_Online_Tissue_Discrimination_for_Transcutaneous_Needle_Guidance_Applications_Using_Broadband_Impedance_Spectroscopy