@article{202106.0059,
	doi = {10.20944/preprints202106.0059.v1},
	url = {https://doi.org/10.20944/preprints202106.0059.v1},
	year = 2021,
	month = {June},
	publisher = {Preprints},
	author = {Sergey I. Ivashov and Lorenzo Capineri and Tim Bechtel and Masaharu Inagaki and Vladimir Razevig and Nikolay Gueorguiev and Ahmet Kizilay},
	title = {Design and Applications of Multi-Frequency Holographic Subsurface Radar: Review and Case Histories},
	journal = {Preprints}
}