@article {9920,
	title = {Niu, Ao, and Thouless Reply:},
	journal = {Physical Review Letters},
	year = {1995},
	pages = {975-},
	doi = {10.1103/PhysRevLett.75.975},
	author = {Qian Niu and Ping Ao and D.J. Thouless}
}
