7Denso-Wave. QR code features [EB/OL]. [2013 - 01 - 23]. http://www. qrcode.com/en/qrfeature.html.
8Feldmann S, Kyamakya K, Zapater A, et al. An Indoor Bluetooth - based Positioning System: Concept, Implementation and Experi- mental Evaluation[ C ]. In:Proceedings of the International Confer- ence on Wireless Networks ( ICWN' 03 ), Las Vegas, Nevada, USA. 2003 : 109 - 113.
9Fontana R J, Gunderson S J. Ultra - wideband Precision Asset Lo- cation System [ C ]. In : Proceedings of IEEE Conference on Ultra Wideband Systems and Technologies. 2002 : 147 - 150.
10Hightower J, Borriello G, Want R. SpotON: An Indoor 3 D Location Sensing Technology Based on RF Signal Strength[ R. Seattle: De- partment of Computer Science and Engineering, University of Washington, 2000.
1Yuxian L,Chiping J. Current use of foreign printperiodi- cals in Chinese librariesand measures to increase theutil- ity of these publications[J].Library Management,2009,30(special issue) :26--37.
2Rata M,Kraf M. Use of QR Codes to Promote E-Books in Medical Libraries[J]. Journal of Electronic Resources in Medical Libraries, 2015,12, ( 1 ) : 11 - 24.
3Ewe A. Orientation Entation Using QR Codes: iPads In The Library[J]. Library Media Connection, 2014, 32 (5):52.
4B Pulliam. Tag, You're It! Using QR Codes to Pro- mote Library Serviees [J].The Referenee Librarian, 2010,(1-2) :68-74.
5QR Codes-Library Success : A Best Practices Wiki [EB/OL]. [2014-07-23]. http:// bttp,//www, libsuc- cess. org/QR_Codes.
