1)- Muhammad Farman, Maryam Amin, Ali Akgül, Aqeel Ahmad, Muhammad Bilal Riaz, Sheraz Ahmad. Fractal-fractional operator for COVID-19 (Omicron) variant outbreak with analysis and modeling.Results in physics. 2022, 39: 105630
2)- Yacine El Hadj Moussa, Ahmed Boudaoui, Saif Ullah, Khursheed Muzammil, Muhammad Bilal Riaz. Application of fractional optimal control theory for the mitigating of novel coronavirus in Algeria.Results in physics. 2022, 39: 105651
3)- Xiao-Ping Li, Haifaa F Alrihieli, Ebrahem A Algehyne, Muhammad Altaf Khan, Mohammad Y Alshahrani, Yasser Alraey, Muhammad Bilal Riaz. Application of piecewise fractional differential equation to COVID-19 infection dynamics.Results in physics. 2022, 39: 105685
4)- Rubayyi T Alqahtani, Salihu S Musa, Abdullahi Yusuf. Unravelling the dynamics of the COVID-19 pandemic with the effect of vaccination, vertical transmission and hospitalization.Results in physics. 2022, 39: 105715
5)- Zhenhua Yu, Ayesha Sohail, Robia Arif, Alessandro Nutini, Taher A Nofal, Sümeyye Tunc. Modeling the crossover behavior of the bacterial infection with the COVID-19 epidemics.Results in physics. 2022, 39: 105774
7)- Abderrahmane Abbes, Adel Ouannas, Nabil Shawagfeh, Giuseppe Grassi. The effect of the Caputo fractional difference operator on a new discrete COVID-19 model.Results in physics. 2022, 39: 105797