Non-quadratic improved Hessian PDF reweighting and application to CMS dijet measurements at 5.02 TeVKari J. Eskola, Petja Paakkinen and Hannu PaukkunenEur. Phys. J. C, 79 6 (2019) 511DOI: https://doi.org/10.1140/epjc/s10052-019-6982-2