@conference{159576,
  author = {Donna Hurley and Davor Balzar and P Purtscher},
  title = {Ultrasonic Nonlinearity Parameter in Precipitate-Hardened Steels},
  year = {1999},
  month = {1999-12-01},
  publisher = {Nondestructive Characterization of Materials, Sydney, AS},
  language = {en},
}