Structure, magnetic properties and phase separation of <f>Nd0.5Ca0.5Mn1−xGaxO3 (0⩽x⩽0.1)</f> - Li, Run-Wei; Sun, Ji-Rong; Li, Qing-An; Zhang, Shao-Ying; Shen, Bao-Gen (Journal of Magnetism & Magnetic Materials, 2003)