Nefedov, I. S.; Gusyatnikov, V. N.; Marciniak, M.; Kononenko, V. K.; Ushakov, D. V. Optical Gain in One-Dimensional Photonic Band Gap Structures With N-I-P-I Crystal Layers. JTIT 2002, 7 (1), 60-64. https://doi.org/10.26636/jtit.2002.1.107.