1. Introduction to the gospel texts and the synoptic problem -- 2. The triple-link model -- 3. Matthew's and Luke's use of Mark : a logistic regression approach -- 4. Hidden Markov for binary time series -- 5. Matthew's and Luke's use of Mark : hidden Markov models -- 6. Mark's and Luke's use of Matthew -- 7. Examples of synoptic parallels -- 8. Final conclusions.