Martinez-Carranza, Juan, Konstantinos Falaggis, and Tomasz Kozacki. “Solution to the Boundary Problem for Fourier and Multigrid Transport Equation of Intensity Based Solvers”. Photonics Letters of Poland 7, no. 1 (April 1, 2015): pp. 2–4. Accessed May 22, 2024. https://photonics.pl/PLP/index.php/letters/article/view/7-2.