00390 a2200121 4500001001000000005001700010008004100027245006700068100002600135700002200161773006800183999001700251ART_1216820260410161904.0260409a 10aTesting for heteroscedasticity in simultanoeus equation models1 aPhillips, Garry D. A.1 aHarvey, Andrew C.0 tJournal of econometricsg- Vol. 15, NÂș 3 (abr. 1981)wREV11720 c26152d26152