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Shen S-Q, Xie XC, Zhang FC. High spin systems with orbital degeneracy. Physical Review Letters. 2002;(2):272011-272014.

Shi J, Xie XC. Droplet state and the compressibility anomaly in dilute 2D electron systems. Physical Review Letters. 2002;(8):086401/1-086401/4.

Zhang P, Xue Q-K, Wang Y, Xie XC. Spin-dependent transport through an interacting quantum dot. Physical Review Letters. 2002;(28 I):286803/1-286803/4.