SONG ZENG-FU, ZHANG HE-YI, XU YAO-ZHOU, LUO ZHEN-JI, JIAN HONG-ZHONG, XI DE-FA, WANG TAI-FU, LIANG MIN-JI. THE ABSORPTION SPECTRUM AND QUANTUM STATES OF NEODYMIUM ION (Nd3+) IN SINGLE CRYSTAL OF ANHYDROUS NEODYMIUM CHLORIDE AND ANHYDROUS PRASEDYMIUM CHLORIDEJ. Acta Physica Sinica, 1980, 29(5): 602-608. DOI: 10.7498/aps.29.602