@article {27420,
	title = {A consistent approach for the treatment of Fermi acceleration in time-dependent billiards},
	journal = {CHAOS},
	volume = {22},
	year = {2012},
	month = {2012},
	isbn = {1054-15001089-7682},
	author = {Karlis, A. K. and Diakonos, F. K. and Constantoudis, V.}
}
