@article {8600,
	title = {Shubnikov-deHaas oscillations around v = 1 2 Landau level filling factor},
	journal = {Solid State Communications},
	year = {1994},
	pages = {71-75},
	author = {R.R. Du and H.L. Stormer and D.C. Tsui and L.N. Pfeiffer and K.W. West}
}
