@book{29192,
	author = {Du Quinghua,},
	title = {Theory and applications of boundary element methods :},
	publisher = {Tsinghua University Press :},
	year = {1990.},
	address = {Bejing :},
	url = {http://koha.tu.koszalin.pl/cgi-bin/koha/opac-detail.pl?biblionumber=29192}
}