Y. Al-Bayati, A., S. Naoum, R. and J. Al-Sawoor, A. (2004) “OSFESOR Code – The Delay Differential Equation Tool ‘Improving Delay Differential Equations Solver’”, AL-Rafidain Journal of Computer Sciences and Mathematics, 1(2), pp. 199–217. doi: 10.33899/csmj.2004.164119 .