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El Sayed, Ali; Pilz, Sönke; Najafi, Hossein; Alexander, Duncan T. L.; Hochstrasser, Martin; Romano, Valerio (2018). Fabrication and Characteristics of Yb-Doped Silica Fibers Produced by the Sol-Gel Based Granulated Silica Method Fibers, 6(4), pp. 82-96. MDPI 10.3390/fib6040082
