TY - JOUR AU - Pannenberg, Markus AU - Spiess, Martin ID - 1148 IS - 4 JF - AStA Advances in Statistical Analysis SN - 1863-8171 TI - GEE estimation of the covariance structure of a bivariate panel data model with an application to wage dynamics and the incidence of profit-sharing in West Germany VL - 93 ER -