Rejea kifungu cha chini na kisha jibu swali baadaye katika lugha sawa na kifungu:  Passage: N. Marwan, M. Romano, M. Thiel na J. Kurths, "Recurrence Plots for the Analysis of Complex Systems", Phys. Rep. 438, 240-329 (2007)  Swali: Waandishi ni Marwan, Romano, Kurths na nani?
Thiel