TY - CHAP A1 - Allison, P.D. A1 - Christakis, N.A. T1 - Fixed effects methods for the analysis of nonrepeated events Y1 - 2006 A3 - Stolzenberg, R.M. T2 - Sociological Methodology 2006 CY - Oxford, UK PB - Wiley-Blackwell SP - 155 EP - -172 ER -