@article {9866,
	title = {AC and DC fields in optical lattices: quasienergy band structure},
	journal = {Journal of Optics B: Quantum and Semiclassical Optics},
	year = {2000},
	pages = {618-627},
	doi = {10.1088/1464-4266/2/5/309},
	author = {Roberto Diener and Qian Niu}
}
