Dien, Luong, Truong, Nguyen, Yamashita, Ken, AND Sugiura, Ken-. " Metal Complexes of π-Expanded Ligands (4): Synthesis and Characterizations of Copper(II) Complexes with a Schiff Base Ligand Derived from Pyrene" VNU Journal of Science: Natural Sciences and Technology [Online], Volume 36 Number 2 (26 June 2020)