Kien, Bui Xuan, Tran Hai Hung, and Trinh Dinh Chien. 2013. “Influence of the Frequency-Chirp on Pulse in Passively Mode-Locking Optical Fiber Ring Laser”. Communications in Physics 23 (2):171. https://doi.org/10.15625/0868-3166/23/2/2785.