Pliński, Edward F., R. Wilk, and R Mikulics. “Terahertz Optical Mixer Design”. Photonics Letters of Poland 1, no. 1 (March 28, 2009): pp. 28–30. Accessed November 20, 2024. http://m.photonics.pl/PLP/index.php/letters/article/view/1-10.