Structural and optical properties of a new soluble erbium (III) octa-substituted bis-phthalocyanine complex. Superficies y Vacio [Internet]. 2014 Dec. 15 [cited 2025 Apr. 12];27(4):110. Available from: https://superficiesyvacio.smctsm.org.mx/index.php/SyV/article/view/2