1. Win, M. Z., & Scholtz, R. A. (1998). Impulse radio: How it works. IEEE Communications Letters, 2(2), 36–38.
2. Di Benedetto, M.-G., & Giancola, G. (2004). Understanding ultra wide band radio fundamentals. New Jersey: Pearson Education.
3. Bolotov, V. N., & Tkach, Y. V. (2007). UWB communication using fractal signals. In Proceedings of the 37th European microwave conference (pp. 1672–1675), Munich.
4. Evangelista, G. (2006) Fractal modulation effects. In Proceeding of the 9th international conference on digital audio effects (DAFx-06) (pp. 101–106), Montreal.
5. Zhang, K. H., Yang, X., & Zhang, L. (2009). Target detection in complex background based on fuzzy enhanced fractal feature. In International conference on information and automation (pp. 408–411), Zhuhai, Macau.