@article {8617,
	title = {Drastic enhancement of composite fermion mass near landau level filling v = 1/2},
	journal = {Physical Review Letters},
	year = {1994},
	pages = {3274-3277},
	author = {R.R. Du and H.L. Stormer and D.C. Tsui and A.S. Yeh and L.N. Pfeiffer and K.W. West}
}
