“…The authors express their appreciation to Joseph S. Molnar, Laurence J. O'Toole, Jr., Robert A. Bernstein, and Caleb M. Clark for their assistance in the development of this paper. 'See, for example, Selznick (1 949), Ridgeway (1 957), Long (1 958), Hammond (1960), Kaufman (1960), Elling and Halebsky (1961), Clark (1969, Wamsley (1 969), Kronenberg (1 973), Meyer (1 979), Miller (1980), Bums (1982, Ford and Bums (1987), Hannan and Freeman (1989), and Viteritti (1990).…”