TY - RPRT TI - Temperature elevations computed for three-layer and four-layer obstetrical tissue models in nonlinear and linear ultrasonic propagation cases. AU - J Wójcik AU - L Filipczyński AU - T Kujawska PY - 1999 DO - 10.1016/s0301-5629(98)00144-6 UR - https://pubmed.ncbi.nlm.nih.gov/10320315/ ID - 10320315 ER -