Onésimo Hernández-Lerma
- Discrete-Time Markov Control Processes with Discounted Unbounded Costs: Optimality Criteria. KYBERNETIKA 28 (1992) n.3, 191-212.
- Existence of Average Optimal Policies in Markov Control Processes with Strictly Unbounded Costs. KYBERNETIKA 29 (1993) n.1, 1-17.