Magnetic transition and large low-field magnetoresistance near Curie temperature in polycrystalline La[sub 2/3]A[sub 1/3]MnO[sub 3] (A=Ca,Sr). - Li, Run-Wei; Sun, Ji-Rong; Li, Qing-An; Zhu, Tao; Zhang, Shao-Ying; Shen, Bao-Gen (Journal of Applied Physics, 2003)