first draft introduction

tex/egbib.bib

@@ -3744,4 +3744,10 @@ doi={10.1109/MVT.2016.2586398},
 ISSN={1556-6080},
 month={Sep.},}
 
-
+@misc{Android_RTT,
+  title={Wi-Fi location: ranging with RTT},
+  author={{Google and Open Handset Alliance}},
+  note={(Visited: 17.01.2020)},
+  howpublished={\url{https://developer.android.com/guide/topics/connectivity/wifi-rtt}},
+  year={2019}
+}