@Article{isprs-archives-XLI-B4-573-2016,
AUTHOR = {Ai, H. J. and Liu, M. Y. and Shi, Y. M. and Zhao, J. Q.},
TITLE = {FLOOR IDENTIFICATION WITH COMMERCIAL SMARTPHONES IN WIFI-BASED INDOOR LOCALIZATION SYSTEM},
JOURNAL = {The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences},
VOLUME = {XLI-B4},
YEAR = {2016},
PAGES = {573--577},
URL = {https://isprs-archives.copernicus.org/articles/XLI-B4/573/2016/},
DOI = {10.5194/isprs-archives-XLI-B4-573-2016}
}