“METHODS OF SEPARATION, PRECONCENTRATION AND DETERMINATION OF BENZOPHENONE AND ITS DERIVATIVES: UDC 543.544; 547.594”. Bulletin of the Taras Shevchenko National University of Kyiv. Chemistry, vol. 50, no. 1, Nov. 2014, pp. 5-12, https://chemistry.bulletin.knu.ua/article/view/8491.