@conference {215,
	title = {Outstanding Problems in Radio Propagation},
	booktitle = {HamSCI-UK},
	year = {2017},
	month = {10/2017},
	publisher = {HamSCI-UK},
	organization = {HamSCI-UK},
	address = {Milton Keynes, UK},
	author = {C. Luetzelschwab}
}
