ChemInform Abstract: Ligand‐Free Copper(I) Oxide Nanoparticle Catalyzed Three‐Component Synthesis of 2H‐Indazole Derivatives from 2‐Halobenzaldehydes, Amines and Sodium Azide in Polyethylene Glycol as a Green Solvent. Issue 44 (4th November 2014) - Sharghi, Hashem; Aberi, Mahdi