DUDRIC, R., Iosif G. DEAC, M. NEUMANN, and R. TETEAN. 2016. “XPS INVESTIGATIONS OF La₀.₆₇Sr₀.₃₃Co₁₋ₓMnₓO₃ COMPOUNDS”. Studia Universitatis Babeș-Bolyai Physica 61 (1):27-34. http://193.231.18.162/index.php/subbphysica/article/view/5792.