Dobrescu, M. “The New Keynesian Approach to Business Cycle Theory: Nominal and Real Rigidities”. International Journal of Economic Practices and Theories, vol. 2, no. 1, Jan. 2012, pp. 13-22, http://ijept.eu/index.php/ijept/article/view/The_New_Keynesian_Approach_to_Business_Cycle_Theory.