1. Worldwide Spending on the Internet of Things Forecast to Reach Nearly $1.4 Trillion in 2021, According to New IDC Spending Guidehttps://www.idc.com/getdoc.jsp?containerId=prUS42799917
2. Internet Protocols for the Smart Gridhttps://tools.ietf.org/html/rfc6272.txt.pdf
3. Machine-to-Machine Communications (M2M); Threat Analysis and Counter-Measures to M2M Service Layerhttp://www.etsi.org/deliver/etsi_tr/103100_103199/103167/01.01.01_60/tr_103167v010101p.pdf
4. Security and Privacy Challenges in the Smart Grid