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 Seminario basato sul [paper](https://www.mdpi.com/2227-7390/11/3/624) [1]
 
-> [1] Bashir, A., Malik, M. A., Riaz, S., & Sultana, S. (2021). A Comparative Study of Numerical Methods for Solving Nonlinear Volterra-Fredholm Integral Equations. Mathematics, 11(3), 624.
+> [1]. Srinivas R. Chakravarthy, Alexander N. Dudin, Sergey A. Dudin and Olga S. Dudina. Queueing System with Potential for Recruiting Secondary Servers. Mathematics 2023, 11(3), 624;
 
 Per scaricare il pdf delle slides, cliccare qui: [view](https://github.com/lukefleed/numerical-markov-slides/blob/main/slides/main.pdf) / [download](https://github.com/lukefleed/numerical-markov-slides/raw/main/slides/main.pdf)