W. Vass

Intersubject variability of real-ear sound pressure level: conventional and insert earphones.

J. Goebel, L. Potts, M. Valente, 1994, Journal of the American Academy of Audiology.

"Time-series properties of annual earnings data: The state of the art"

Kenneth S. Lorek, R. Kee, W. Vass, 1981 .