@article{Rihan_2018,
    doi = {10.1155/2018/4584389},
    url = {https://doi.org/10.1155%2F2018%2F4584389},
    year = {2018},
    month = {sep},
    publisher = {Hindawi Limited},
    volume = {2018},
    pages = {1--3},
    author = {F. A. Rihan and C. Tunc and S. H. Saker and S. Lakshmanan and R. Rakkiyappan},
    title = {Applications of Delay Differential Equations in Biological Systems},
    journal = {Complexity}
}

@article{Rihan_2018, doi = {10.1155/2018/4584389}, url = {https://doi.org/10.1155%2F2018%2F4584389}, year = {2018}, month = {sep}, publisher = {Hindawi Limited}, volume = {2018}, pages = {1--3}, author = {F. A. Rihan and C. Tunc and S. H. Saker and S. Lakshmanan and R. Rakkiyappan}, title = {Applications of Delay Differential Equations in Biological Systems}, journal = {Complexity} }