Baltagi, Badi H.; Kao, Chihwa; Liu, Long - In: 30th anniversary edition, (pp. 199-235). 2012
This chapter studies the asymptotic properties of within-groups k-class estimators in a panel data model with weak instruments. Weak instruments are characterized by the coefficients of the instruments in the reduced form equation shrinking to zero at a rate proportional to nTδ, where n is the...