TY - CONF AU - Hurley, Donna AU - Balzar, Davor AU - Purtscher, P C2 - Nondestructive Characterization of Materials DA - 1999-11-01 LA - en PB - Nondestructive Characterization of Materials PY - 1999 TI - Nonlinear Ultrasonic Parameter in Precipitate-Hardened Steels ER -