Kaňka, J., Honzátko, P., Peterka, P., Kašík, I., Matějec, V. Line-narrowing and wavelenghth stabilization in a tunable Er-Yb fibre ring laser with an Er twin-core fibre. Bellingham: SPIE The International Society for Optical Engineering, 2000. ISBN 0-8194-3641-0. ISSN 0277-786X. In: HRABOVSKÝ, M., TOMÁNEK, P., MILER, M., eds. Photonics, Devices, and Systems. , s. 315-319.