@article{Qiao-2015-APL,
	doi = {10.1063/1.4921911},
	year = {2015},
	volume = {106},
        number = {22},
	pages = {223102},
	author = {Xiao-Fen Qiao and Xiao-Li Li and Xin Zhang and Wei Shi and Jiang-Bin Wu and Tao Chen and Ping-Heng Tan},
	title = {Substrate-free layer-number identification of two-dimensional materials: {A} case of {M}o$_{0.5}${W}$_{0.5}${S}$_2$ alloy},
	journal = {Appl. Phys. Lett.}
}