note = "Invited lecture at Danske Akustiske Dage, January 7-8, 1993, Aalborg. (No written version) Invited lecture at Danske Akustiske Dage, January 7-8, 1993, Aalborg. (No written version)",
N1 - Invited lecture at Danske Akustiske Dage, January 7-8, 1993, Aalborg. (No written version)
Invited lecture at Danske Akustiske Dage, January 7-8, 1993, Aalborg. (No written version)