Effect of coherence on the superluminal propagation of light pulses through anomalously dispersive media with gainLi-Gang Wang, Nian-Hua Liu, Qiang Lin and Shi-Yao ZhuEurophys. Lett., 60 6 (2002) 834-840DOI: https://doi.org/10.1209/epl/i2002-00292-4