This volume (Vol. 23/Number 3/1999) of the Journal of Mathematical Sociology was Edited by
Patrick Doreian (University of Pittsburgh), with Associate Editors:
Thomas Fararo (University of Pittsburgh),
John Skvoretz (University of South Carolina) and
Wolfgang Sodeur (Universitats-Gesamthochschule Essen) and contains articles by:

DIANE H. FELMLEE and DAVID F. GREENBERG
        A Dynamic Systems Model of Dyadic Interaction
M.G. EVERETT and S.P. BORGATTI
        The Centrality of Groups and Classes
PHILLIP BONACICH
        An Algebraic Theory of Strong Power in
        Negatively Connected Exchange Networks
GUSTAV FEICHTINGER, STEFFEN JORGENSEN and
ANDREAS J. NOVAK
        Petrarch's Canzoniere: Rational Addiction and
        Amorous Cycles