A Robust Method for Indoor Localization Using Wi-Fi and SURF Based Image Fingerprint Registration. - Jianwei Niu 002; Kopparapu Venkata Ramana; Bowei Wang; Joel J. P. C. Rodrigues (ADHOC-NOW, 2014)

An enhanced K-Nearest Neighbor algorithm for indoor positioning systems in a WLAN. - Mir Yasir Umair; Kopparapu Venkata Ramana; Dongkai Yang (ComComAP, 2014)