Djotyan, G. P., Bakos, J. S., S¨orlei, Z., & autor, nowy. (2023). Nonlinear optics of the thin-film quasiwaveguide amplifier: applications to directional switching in the optical communication systems. DEMO, (1-2), 20–23. https://doi.org/10.21641/demo.vi1-2.131 (Original work published June 30, 2000)