PHYSICS LETTERS A

BAI CX, YANG YL, JIANG YJ, YANG HX

PHYSICS LETTERS A

MU WL, WU HN, HAN Y, GONG WJ

PHYSICS LETTERS A

DING H, ZHENG XH

PHYSICS LETTERS A

SHAO L, CHEN GD, YE HG, NIU HB, WU YL, ZHU YZ, DING BJ

PHYSICS LETTERS A

ZHAO J, ZENG H, WEI JW, LI B, XU DH

PHYSICS LETTERS A

ZHAO P, LIU DS, LI SJ, CHEN G

PHYSICS LETTERS A

HU T, ZHOU J, DONG JM

PHYSICS LETTERS A

ZENG H, ZHAO J, WEI JW, ZENG XL, XU Y

PHYSICS LETTERS A

XU N, WANG BL, SHI DN, WANG YZ, ZHANG C

PHYSICS LETTERS A

DAI CJ, YAN XH, GUO YD, XIAO Y