Dalton, John T.; Goksel, Turkmen - In: Economics Letters 121 (2013) 3, pp. 520-523
Melitz and Ottaviano (2008) predicts a monotonic relation between productivity and markups. When including revenue taxes, however, this relation is non-monotonic and depends on taxes. Even without taxes, productivity and markups can be non-monotonic depending on how non-homotheticity is modeled.