@book{4253,
	author = {Gibowicz, Sławomir J., and Kijko, Andrzej.},
	title = {An introduction to mining seismology /},
	publisher = {Academic Press,},
	year = {c1994.},
	address = {San Diego :},
	url = {http://www.loc.gov/catdir/description/els032/93020660.html}
}