@article {49439,
	title = {Extraction of bitumen, crude oil and its products from tar sand and contaminated sandy soil under effect of ultrasound},
	volume = {16},
	year = {2009},
	pages = {408-416},
	publisher = {Ultrasonics Sonochemistry},
	url = {http://www.jstor.org/pss/3872954},
	author = {Abramov, O.V. and Abramov, V. O. and Myasnikov, S. K. and Mullakaev, M. S.}
}
