Wang XR, Wong CY, Xie XC. Metal-insulator transition in a multilayer system with a strong magnetic field. Physical Review B - Condensed Matter and Materials Physics. 1999;(8):R5277-R5279.

Wang XR, Ma SC, Xie XC. The level-shifting-induced negative magnetoresistance in the nearest-neighbor hopping conduction. Europhysics Letters. 1999;(3):368-373.

Wang XR, Xie XC, Liu DZ. Metal-insulator transition of 2D electron gas in a random magnetic field. Journal of the Korean Physical Society. 1999;(SUPPL. 2):S143-S147.