gilles dorival: Psalms Catenae. State of the Art and Remaining Problems

In my five-volume study on the Psalms Catenae, I hope I have shown that there were two stages, the first one in Judaea-Palestine with three models and the second one in Constantinople with three other models. Some issues remain. For instance, is the first Palestinian Catena prior or posterior to Procopius ? Were there Scholia-Catenae? Were there Monophysite Catenae and at what time? What is the dating of the Two-Authors Catenae?