You could start with the Structure-conduct-performance paradigm of Mason and Bain.

Many studies have been conducted i industrial economics with this paradigm.

thanks but how can i do an empirical study about the Algerian banking industry

According to the traditional industrial economics approach, the link between market structure and (sectoral) performance can be measured and estimated through the link between the Herfindhal index and the Lerner index

thank you M. Vivarelli,i want by this study to test the SCP hypotheses and the efficient-structure hypotheses in the banking industry, for this reason i want to measure the structure by several index ( like H-statistic of panzar and ross), than i want to test all the two hypothesis of structure-performance relationship using simultaneous equations model