@book{15023,
	author = {LINDSEY, C. H. and MEULEN, S. G.},
	title = {Informal Introduction to Algol 68 /},
	year = {1971.},
	address = {Amsterdam,},
	url = {http://koha.tu.koszalin.pl/cgi-bin/koha/opac-detail.pl?biblionumber=15023}
}