Complex impedance spectroscopy studies of (La0.70−x Nd x )Sr0.30Mn0.70Cr0.30O3 (x≤0.30) perovskite compounds - Kallel, Sami; Nasri, Ammar; Kallel, Nabil; Rahmouni, Hedi; Peña, Octavio; Khirouni, Kamel; Oumezzine, Mohamed (Physica B, 2011)