1. Lecture Notes in Computer Science;H Wu,2008
2. Barnsley, M.: Fractals Everywhere. Academic Press, Cambridge (1988)
3. Bassham, L., et al.: A statistical test suite for random and pseudorandom number generators for cryptographic applications (16 September 2010). https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=906762
4. Biryukov, A., Perrin, L.: State of the art in lightweight symmetric cryptography. IACR Cryptol. ePrint Arch. 2017, 511 (2017)
5. Bishoi, S.K., Senapati, K., Shankar, B.: Shrinking generators based on $$\sigma $$-LFSRs. Discret. Appl. Math. 285, 493–500 (2020). https://www.sciencedirect.com/science/article/pii/S0166218X20303346