@inproceedings {zhang2019slam,
	title = {Slam-Based Multi-Sensor Backpack Lidar Systems in Gnss-Denied Environments},
	booktitle = {IGARSS 2019-2019 IEEE International Geoscience and Remote Sensing Symposium},
	year = {2019},
	pages = {8984{\textendash}8987},
	publisher = {IEEE},
	organization = {IEEE},
	author = {Zhang, Dedong and Gong, Zheng and Chen, Yiping and Zelek, John and Li, Jonathan}
}
