TY - CONF AU - Hurley, Donna AU - Balzar, Davor AU - Purtscher, P C2 - Nondestructive Characterization of Materials, Sydney, AS DA - 1999-12-01 LA - en PB - Nondestructive Characterization of Materials, Sydney, AS PY - 1999 TI - Ultrasonic Nonlinearity Parameter in Precipitate-Hardened Steels ER -