Dr. Shin-ichiro Shima co-authored a paper:
Furukawa, K., Sakamoto, H., Ohhigashi, M. et al. Particle filter data assimilation for ubiquitous unstable trajectories of two-dimensional three-state cellular automata. Nonlinear Dyn (2024). https://doi.org/10.1007/s11071-024-09803-5