1. Baronti, P., Pillai, P., Chook, V. W. C., Chessa, S., Gotta, A., & Hu, Y. F. (2007). Wireless sensor networks: A survey on the state of the art and the 802.15.4 and ZigBee standards. Computer Communications-Elsevier, 30, 1655–1695.
2. Koubaa, A., Alves, M., & Tovar, E. (2006). A comprehensive simulation study of slotted CSMA/CA for IEEE 802.15.4 wireless sensor networks. In IEEE international workshop on factory communication systems (pp. 183–192).
3. Bih-Hwang, L., & Huai-Kuei, W. (2007). A delayed backoff algorithm for IEEE 802.15.4 beacon-enabled LR-WPAN. In 6th International conference on information, communications & signal processing (pp. 1–4).
4. Chi-Ming, W., Ruei-Lung, L., & Lai, I. T. (2010). An enhanced carrier sensing algorithm for IEEE 802.15.4 low-rate wireless sensor networks. In IEEE symposium on industrial electronics & applications (ISIEA) (pp. 10–15).
5. Wong, C.-M., & Lee, B.-H. (2012). An Improvement of Slotted CSMA/CA Algorithm in IEEE 802.15.4 Medium Access Layer. Wireless Personal Communications, 63, 807–822.