1. Semtech Application Note AN1200.22 LoRa Modulation Basicswww.semtech.com
2. LoRaWAN 1.0.2 Regional Parameterswww.lora-alliance.org
3. LoRaWAN Specification V1.0.2www.lora-alliance.org
4. IoT Standards Part II: 3GPP Standards/Training on Planning Internet of Things (IoTs) Networkshttps://www.itu.int/en/ITU-D/Regional-Presence/AsiaPacific/Pages/Events/2018/IoT-BDG/Presentations.aspx