by Koplan, J P, Thacker, S B, Lezin, N A
Published in American journal of public health (1971) (01.08.1999)

by Kreuter, M W, Lezin, N A, McPhillips-Tangum, C
Published in American journal of health promotion (01.11.1997)

by Kreuter, M W, Lezin, N A, Young, L, Koplan, A N
Published in WHO regional publications. European series (2001)