►R. Ahmadi, Maintenance Scheduling of a Manufacturing System Subject to Linear Deterioration Model. Proceedings of the ۱۸th ISSAT International
►Conference on Reliability and Quality in Design; Boston, MA; United States; ۲۶ July ۲۰۱۲ through ۲۸ July ۲۰۱۲; Pages ۳۵۵-۳۶۳; ISBN: ۹۷۸-۰۹۷۶۳۴۸۶۸-۹; Scopus-indexed.
►R. Ahmadi and M.J. Newby, An Optimal Preventive Maintenance Policy of a Deteriorating System Subject to a Bivariate State Process. Advances in Safety, Reliability and Risk Management. Taylor and Francis Group, London, ۲۰۱۱, ۸۱۰-۸۱۸, ISBN: ۹۷۸-۰-۴۱۵-۶۸۳۷۹-۱, DOI: ۱۰۱۲۰۱/b۱۱۴۳۳-۱۱۵.۳.
►R. Ahmadi and M.J. Newby, A New Approach to Maintenance Optimization by Modelling Intensity Control. Mathematical and Statistical Models in Reliability, Statistics for Industry and Technology, Part ۱, ۶۹-۸۵, DOI: ۱۰.۱۰۰۷/۹۷۸-۰-۸۱۷۶-۴۹۷-۵_۵, (۲۰۱۰).
►R. Ahmadi, A Preventive Maintenance Model for Periodically Inspected Deteriorating systems. ۱st National Seminar on Reliability Theory and Its Application. Isfahan University, Iran. May ۲۷-۲۸, ۲۰۱۵.
►R. Ahmadi, A new approach to odeling condition-based maintenance for stochastically deteriorating systems. Accepted for presentation at INFORMS Applied Probability Society Conference ۲۰۱۳, Costa Rica.
►R. Ahmadi and M.J. Newby, A Semi-Parametric Approach to Maintenance Optimization. ۶th International Conference on Mathematical Methods in Reliability (MMR). The Russian State University of Oil and Gas, Moscow. Russia. June ۲۲-۲۶, ۲۰۰۹.
►R. Ahmadi, A Preventive Maintenance Model for Periodically Inspected Deteriorating systems. ۱st National Seminar on Reliability Theory and Its Application. Isfahan University, Iran. May ۲۷-۲۸, ۲۰۱۵.
►R. Ahmadi, A new approach to modeling condition-based maintenance for stochastically deteriorating systems. Accepted for presentation at INFORMS Applied Probability Society Conference ۲۰۱۳, Costa Rica.
►R. Ahmadi and M.J. Newby, A Semi-Parametric Approach to Maintenance Optimization. ۶th International Conference on Mathematical Methods in Reliability (MMR). The Russian State University of Oil and Gas, Moscow. Russia. June ۲۲-۲۶, ۲۰۰۹.