TY - GEN AU - Profunser,D M AU - Vollmann,J AU - Dual,J TI - Ultrasonic wave propagation in focussing tips with arbitrary geometries SN - 0041-624X PY - 2002///0823 N1 - Publication Type: Journal Article UR - https://doi.org/10.1016/s0041-624x(02)00205-6 ER -