TY - GEN AU - Kremkau,F TI - Source of double Doppler shift in blood flow SN - 0301-5629 PY - 1990///1204 KW - Blood Flow Velocity KW - physiology KW - Doppler Effect KW - Humans KW - Ultrasonics N1 - Publication Type: Letter UR - https://doi.org/10.1016/0301-5629(90)90174-b ER -