Yu, Q., P. H. Zongo and P. Facq. "Characterization of Nominally Singlemode Fiber Systems Used in a Weakly Multimode Regime" Journal of Optical Communications, 14.3 (1993): 85-88. Retrieved 22 May. 2013, from doi:10.1515/JOC.1993.14.3.85

Yu, Q., Zongo, P. & Facq, P. (1993). Characterization of Nominally Singlemode Fiber Systems Used in a Weakly Multimode Regime. Journal of Optical Communications, 14(3), pp. 81-120. Retrieved 22 May. 2013, from doi:10.1515/JOC.1993.14.3.85

Yu, Q., P. H. Zongo and P. Facq. 1993. Characterization of Nominally Singlemode Fiber Systems Used in a Weakly Multimode Regime. Journal of Optical Communications. 14(3): 81-120. Retrieved 22 May. 2013, from doi:10.1515/JOC.1993.14.3.85