References
- The Naver Encyclopedia, off-side. https://terms.naver.com/entry.nhn?docId=1206168&cid=40942&categoryId=31969.
- Clive Griffin-BraeMar, "Offside Detection Device," football and technology white papers, 2010.
- Werner Helsen, Bart Gilsis, and Matthew Weston, "Errors in judging ''offside'' in association football: Test of the optical error versus the perceptual flash-lag hypothesis," The Journal of Sports Sciences, May 2006.
- The Premier League Player Stats, Stats page of Premier League. https://www.premierleague.com/home.
- The ArsViator, Understands of Beacon. https://arsviator.blogspot.com/2015/02/beacon.html.
- Ugur Bekcibasi and Mahmut Tenruh, Increasing RSSI Localization Accuracy with Distance Reference Anchor in Wireless Sensor Networks, Thesis of Acta Polytechnica Hungarica,Hungary, Hyngary, 2014.
- Jung Hee Park, Explanation and Experiment of Heron's Theory, Ph.D. Thesis. University of YoungNam,, Gyeongsangbuk-do, Korea, 2013.
- The Naver Encyclopedia, Heron's Formula. https://terms.naver.com/entry.nhn?docId=3350242&cid=60210&categoryId=60210.
- The Naver Post, Differences of Bluetooth 5.0. https://m.post.naver.com/viewer/postView.nhn?volumeNo=9942139&memberNo=32922216&vType=VERTICAL.
- Won Jin Kim, Optimized BLE Beacon System for Indoor Positioning, Ph.D. Thesis. University of MyungJi, Seoul, Korea., 2018.