Olonkins, S.; Bickovs, V.; Salgals, T.; Bobrovs, V.; Ivanovs, G. Investigation of Dual-Pump FOPA Performance in a 4-Channel 40 Gbps WDM Transmission System. ELEKTRON ELEKTROTECH 2017, 23 (6), 85-89. https://doi.org/10.5755/j01.eie.23.6.19699.