TY - GEN AU - Banjavic,R A AU - Zagzebski,J A TI - Ultrasonic pulse-echo beam width and axial response approximations for clinical broadband focused transducers SN - 0301-5629 PY - 1981///0709 KW - Mathematics KW - Transducers KW - Ultrasonics KW - instrumentation N1 - Publication Type: Journal Article; Research Support, U.S. Gov't, P.H.S UR - https://doi.org/10.1016/0301-5629(81)90023-5 ER -