Exact solution of Hartemann–Luhmann equation of motion for a charged particle interacting with an intense electromagnetic wave/pulseShivam Kumar Mishra and Sudip SenguptaEur. Phys. J. Spec. Top., 230 23 (2021) 4165-4174DOI: https://doi.org/10.1140/epjs/s11734-021-00260-4