00357 a2200109 4500001001000000005001700010008004100027245007500068100001900143773006800162999001700230ART_1246820260410161906.0260409a 10aA note on a fixed affect model with arbitrary interpersonal covariance1 aSchmidt, Peter0 tJournal of econometricsg- Vol. 22, NÂș 3 (ago. 1983)wREV11720 c26397d26397