@book{271191,
	author = {Zelenyuk, Yevhen G. and ProQuest (Firm)},
	title = {Ultrafilters and topologies on groups},
	publisher = {De Gruyter,},
	year = {c2011.},
	series = {De Gruyter expositions in mathematics,},
	address = {Berlin ;},
	url = {https://ebookcentral.proquest.com/lib/kuct-ebooks/detail.action?docID=690579}
}