Joshi , H. and Jha, B.K. 2021. Chaos of calcium diffusion in Parkinson’s infectious disease model and treatment mechanism via Hilfer fractional derivative. Mathematical Modelling and Numerical Simulation with Applications. 1, 2 (Dec. 2021), 84–94. DOI:https://doi.org/10.53391/mmnsa.2021.01.008.