@inproceedings{dou_comparing_2014,
	title = {Comparing {Multi}-constellation and {Multi}-frequency based on {GPS}/ {BeiDou} {RTK} {Positioning}},
	booktitle = {{ION} {GNSS}+ 2014},
	author = {Dou, Jingjing and O'Keefe, K},
	year = {2014},
	note = {CP49},
	pages = {2317 -- 2325}
}