Kotok, V. and Kovalenko, V. 2018. A study of the effect of tungstate ions on the electrochromic properties of Ni(OH)2 films. Eastern-European Journal of Enterprise Technologies. 5, 12 (95) (Oct. 2018), 18–24. DOI:https://doi.org/10.15587/1729-4061.2018.145223.