CdS@Mn(OH)2 nanocomposites: Novel aqueous synthesis, structural and optical properties M. S. Abd El-sadek, H. S. Wasly and Hamdy S. El-Sheshtawy Eur. Phys. J. Plus, 133 12 (2018) 499 Published online: 10 December 2018 DOI: 10.1140/epjp/i2018-12403-5