2698 20160701171709.0 10.1051/epjconf/201510106027 DOI ASTROimport-855 Groenewegen, M. A. T. 2015 The period distribution of Cepheids: a test of stellar evolution The period distributions of classical Cepheids in the Small and Large Magellanic Cloud are quite different. Using the TRILEGAL population synthesis code and a theoretical instability strip the ultimate aim is to understand these differences quantitatively. First results are presented for one area in the LMC using VMC NIR data. Girardi, L. European Physical Journal Web of Conferences 101 2015 06027 http://esoads.eso.org/abs/2015EPJWC.10106027G published in NONREF