Hasan, Sameer Q., and Fatima S. Hussein. “Existence and Stability of Solutions for Bilinear Control System With Rieman-Leovel Initial Condition”. Al-Mustansiriyah Journal of Science, vol. 28, no. 1, Nov. 2017, pp. 118-36, https://doi.org/10.23851/mjs.v28i1.322.