@article {5504,
	title = {Self-assessment of language proficiency: rationale and applications },
	journal = {Language Testing},
	volume = {6 (1)},
	year = {1989},
	pages = {1-13},
	keywords = {proficiency, self-assessment},
	url = {http://ltj.sagepub.com/content/6/1/1.abstract},
	author = {Oscarson, M.}
}
