1. Huelsing, A., Butin, D., Gazdag, S., Rijneveld, J., Mohaisen, A.: XMSS: eXtended Merkle signature scheme. RFC 8391 (2018). https://doi.org/10.17487/RFC8391. https://www.rfc-editor.org/info/rfc8391
2. Bernstein, D.J., Hopwood, D., Hülsing, A., Lange, T., Niederhagen, R., Papachristodoulou, L., Schneider, M., Schwabe, P., Wilcox-O’Hearn, Z.: SPHINCS: practical stateless hash-based signatures (2015). https://doi.org/10.1007/978-3-662-4
3. Aumasson, J.-P., Bernstein, D.J., Beullens, W., Dobraunig, C., Eichlseder, M.: SPHINCS+—submission to the 3rd round of the NIST post-quantum project. v3.1 (2022). https://sphincs.org/data/sphincs+-r3.1-specification.pdf
4. Kudinov, M.A., Kiktenko, E.O., Fedorov, A.K.: Security analysis of the WOTS+ signature scheme: updating security bounds (2020). arXiv:2002.07419
5. Hülsing, A., Kudinov, M.: Recovering the tight security proof of $$SPHINCS^{+}$$. Cryptology ePrint archive, paper 2022/346 (2022). https://eprint.iacr.org/2022/346