@mastersthesis {34149,
	title = {Diggability of plains overburdens with bucket wheel excavators},
	volume = {Mineral Engineering},
	year = {1984},
	note = {lots of spelling mistakes},
	pages = {225},
	address = {University of Alberta},
	url = {http://search.proquest.com/docview/303338327},
	author = {Krzanowski, Roman}
}
