Auguściuk E, Biniecki G. Investigation of parameters of the multimode four-layer waveguide structures and their influence on the light propagation. Photonics Lett. Pol. [Internet]. 2009 Sep. 30 [cited 2024 Nov. 23];1(3):pp. 124-126. Available from: http://photonics.pl/PLP/index.php/letters/article/view/1-42