“SOLIDPHASE-PHOTOMETRY DETERMINATION OF MERCURY BY PROPYLTHIOETHYLEAMINE SILICA: UDC 543.3:541.183.5:546.49”. Bulletin of the Taras Shevchenko National University of Kyiv. Chemistry, vol. 45, no. 2, Apr. 2008, pp. 24-26, https://chemistry.bulletin.knu.ua/article/view/8331.