1. Al-Ahram Gate website (2021) “The link between the patient and the doctor, rescue brigades are heroes inside ambulances”. Retrieved on 9 March 2021 at: https://gate.ahram.org.eg/News/2391717.aspx
2. Alaya I, Solnon C, Gheira K (2004) Ant algorithm for the multi-dimensional knapsack problem, International Conference on Bioinspired Optimization Methods and their Applications, (BIOMA 2004), 2004, 63–72
3. Anany L (2003) The design and analysis of algorithms. Pearson Education Inc., New Jersey, p 2003
4. Basheer GT, Algamal ZY (2019) Nature-inspired optimization algorithms in knapsack problem: a review. Iraqi Journal of Statistical Science 30:1–18
5. Biglar A (2018a) Applications and solutions of knapsack problem: a literature review. https://doi.org/10.13140/RG.2.2.10921.08807. Retrieved at: file:///C:/Users/Dr%20Said/Downloads/knapsack.pdf