D. Bajovic, K. He, D. Vukobratovic, L. Stankovic, and V. Stankovic, IEEE Journal on Selected Topics in Signal Processing, June 2018, accepted. Open access link: https://pure.strath.ac.uk/portal/en/publications/optimal-detection-and-error-exponents-for-hidden-semi-markov-models(c4c41ce8-cf61-43a0-904d-d0576c8819ff).html