1. Angius, A., Horvath, A., & Colledani, M. (2011). Moments of cumulated output and completion time of unreliable general Markovian machines. In Proceeding of the 18th World congress of the international federation of automatic control (IFAC), Milan, Italy.
2. Assaf, R. (2012). Analysis of the output variability in multi-stage manufacturing systems, PhD Thesis, Politecnico di Milano, Department of Mechanical Engineering, Milano, Italy.
3. Buzacott, J. A., & Kostelski, D. (1987). Matrix-geometric and recursive algorithm solution of a two-stage unreliable flow line. IIE Transactions, 19, 429–438.
4. Buzacott, J. A., & Shanthikumar, J. G. (1993). Stochastic models of manufacturing systems. Englewood Cliffs: Prentice Hall.
5. Carrascosa, M. (1995). Variance of the output in a deterministic two-machine line, Master’s thesis, Massachusetts Institute of Technology, Cambridge, MA.