інтернет-адреса сторінки:
http://jnas.nbuv.gov.ua/article/UJRN-0001413236
Mathematical modeling and computing 
А - 2020 /
Випуск (2023, Vol. 10, Num. 1)
Khaloufi I., Lafif M., Benfatah Y., Laarabi H., Bouyaghroumni J., Rachik M.
A continuous SIR mathematical model of the spread of infectious illnesses that takes human immunity into account
Cite:
Khaloufi, I., Lafif, M., Benfatah, Y., Laarabi, H., Bouyaghroumni, J., Rachik, M. (2023). A continuous SIR mathematical model of the spread of infectious illnesses that takes human immunity into account. Mathematical Modeling and Computing, 10 (1), 53–65. http://jnas.nbuv.gov.ua/article/UJRN-0001413236
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