Wook Lee, Sung, Jung Won Lee, Hui Jun Won, Don Kim, and Won Yang Chung. 2012. “Superconductivity and X-Ray Crystallographic Structures of LaxBa1+xCu1+2xOy (x = 2, 3, . )”. Asian Journal of Chemistry 24 (9):4149-52. https://asianpubs.org/index.php/ajchem/article/view/9571.