OLONKINS, S.; BOBROVS, V.; IVANOVS, G. Investigation of Fiber Optical Parametric Amplifier Performance in DWDM Transmission Systems. Elektronika ir Elektrotechnika, [S. l.], v. 20, n. 1, p. 88–91, 2014. DOI: 10.5755/j01.eee.20.1.6170. Disponível em: https://eejournal.ktu.lt/index.php/elt/article/view/6170.. Acesso em: 8 feb. 2026.