“STUDYING THE EFFECT OF POLYVINYLPYRROLIDONE (PVP) ON CHARACTERIZATION OF ZNO NANOPARTICLES SYNTHESIZED BY SOL – GEL METHOD”, IQJMME, vol. 18, no. 3, pp. 460–469, Nov. 2018, doi: 10.32852/iqjfmme.v18i3.181.