1. Desurvire, E.: ‘Erbium-doped fiber amplifiers’, (Wiley New York Chichester Brisbane Toronto Singapore 1994)
2. Wyatt, R.: ‘Spectroscopy of rare-earth doped fibres’, France, P.W., Optical fibre lasers and amplifiers, (Glasgow and London: Blackie, and Boca Raton: CRC Press 1991)
3. Modeling erbium-doped fiber amplifiers