B.  Becker, Kaldenberg, D., and McAlexander, J., ?Yellow Pages Usage by Professionals: An Exploratory Study of Dentists?, Health Marketing Quarterly, vol. 12, no. 2, pp. 97-110, 1994.

J.  McAlexander, Becker, B., and Kaldenberg, D., ?Positioning Health Care Services: Yellow Pages Advertising and Dental Practice Performance?, Journal of Health Care Marketing, vol. 13, no. 1, pp. 54-57, 1993.