H. Audéoud, M. Krol, M. Heusse, and A. Duda, Low overhead loopfree routing in wireless sensor networks, WiMob 2015, pp.443-451, 2015.

J. Yi, T. Clausen, and A. C. De-verdiere, Efficient Data Acquisition in Sensor Networks: Introducing (the) LOADng Collection Tree Protocol, 2012 8th International Conference on Wireless Communications, Networking and Mobile Computing, pp.1-4, 2012.
DOI : 10.1109/WiCOM.2012.6478508