Xie, R., J. Zhang, J. Niu, W. Li, and G. Yao. “A Reproducing Kernel Method for Solving Singularly Perturbed Delay Parabolic Partial Differential Equations”. Mathematical Modelling and Analysis, vol. 28, no. 3, Sept. 2023, pp. 469–486, doi:10.3846/mma.2023.16852.