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Panel count data are commonly encountered in analysis of recurrent events where the exact event times are unobserved. To accommodate the potential non-linear covariate effect, we consider a ...
LM Tests for the Unbalanced Nested Panel Data Regression Model with Serially Correlated Errors Badi H. Baltagi, Seuck Heun Song and Byoung Cheol Jung Annales d'Économie et de Statistique , pp. 219-268 ...