Luo Xiang-Dong, Ji Chang-Jian, Wang Yu-Qi, Wang Jian-Nong. Low energy oscillatory phenomena in photoreflectance and photo-modulation reflectance spectra of GaMnAs films grown by low temperature molecular-beam epitaxyJ. Acta Physica Sinica, 2008, 57(8): 5277-5283. DOI: 10.7498/aps.57.5277