@article {526,
	title = {Lexicographic study in the Sketch Engine},
	journal = {Journal of Computer Science and Cybernetics},
	volume = {27},
	year = {2011},
	pages = {206-218},
	author = {Thi-Ha Phan and Thi-Minh-Huyen Nguyen and Phuong Le-Hong}
}
