'A'
Design of a flat-gain multipumped distributed fiber Raman amplifier by particle swarm optimization
Author(s): Mowla A (Mowla, Alireza)1, Granpayeh N (Granpayeh, Nosrat)1  
Source: JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION    Volume: 25    Issue: 12    Pages: 3059-3066    Published: DEC 2008    
Addresses:
1. KN Toosi Univ Technol, Fac Elect Engn, Tehran 1431714191, Iran  

'B'
A fast and stable method for Raman amplifier propagation equations
Author(s): Liu XM, Lee B  
Source: OPTICS EXPRESS    Volume: 11    Issue: 18    Pages: 2163-2176    Published: SEP 8 2003