I am estimating a dynamic model using xtabond2. My dataset has 268 panels for 46 years (its a balanced panel however for some independent variables there are few observations that are missing)
I use the following code
xtabond2 logwheatph l(1/2).logwh logl L.logl logf L.logf logt L.logt loga L.loga logr logirr L.logirr sid L.sid c.logr#c.logirr c.lograbi#c.sid c.logr#cL.logirr cL.lograbi#c.sid, gmm(logl logf logt loga L.logirr L.sid) iv(logr) robust small