@article{paperid:1036659,
author = {M. Karimi Amaleh and Afsharnejad, Zahra},
title = {Periodic Solutions in Certain Class of 3-Dimension Discontinuous Autonomous Systems},
journal = {Journal of Mahani Mathematical Research Center},
year = {2012},
volume = {1},
number = {2},
month = {January},
issn = {2251-7952},
pages = {119--136},
			numpages = {17},
keywords = {perturbation periodic solution discontinuous system},
}