@article {9871,
	title = {Quantization and corrections of adiabatic particle transport in a periodic ratchet potential},
	journal = {Europhysics Letters},
	year = {2002},
	pages = {324-329},
	doi = {10.1209/epl/i2002-00197-2},
	author = {Y. Shi and Q. Niu}
}
