Optimal control approach based on sensitivity analysis to retrench the pine wilt disease Takasar Hussain, Muhammad Ozair, Muhammad Faizan, Sajid Jameel and Kottakkaran Sooppy Nisar Eur. Phys. J. Plus, 136 7 (2021) 741 Published online: 10 July 2021 DOI: 10.1140/epjp/s13360-021-01695-3