Persistence and phase synchronisation properties of fixational eye movementsS. Moshel, A. Z. Zivotofsky, L. Jin-Rong, R. Engbert, J. Kurths, R. Kliegl and S. HavlinEur. Phys. J. Special Topics, 161 (2008) 207-223DOI: https://doi.org/10.1140/epjst/e2008-00762-3