TY - JOUR AU - Slotwinski, John AU - Snydor, C AU - Lopez-Sanchez, Ana C2 - Materials Evaluation DA - 2000-03-01 LA - en PB - Materials Evaluation PY - 2000 TI - Variable Waveform Excitation of Ceramic-Element Transducers for ASTM E127-Type Reference Block Calibration ER -