@article {9846,
	title = {Quantised adiabatic charge transport in the presence of substrate disorder and many-body interaction},
	journal = {Journal of Physics A: General Physics},
	year = {1984},
	pages = {2453-2462},
	doi = {10.1088/0305-4470/17/12/016},
	author = {Q. Niu and D.J. Thouless}
}
