“A WIDEBAND AND FLAT-GAIN OF AN AMPLIFIER BY USING ZIRCONIA-BASED ERBIUM-DOPED FIBER (ZR-EDF) FOR SINGLE PASS PPERATION”. Jurnal Teknologi (Sciences & Engineering), vol. 78, no. 3, Feb. 2016, https://doi.org/10.11113/jt.v78.7458.