1. 1. S.A. Balyuk, A.I. Fateev, and M.M. Miroshnychenko, Geochemical Soil Inspection at Urbanized Terrains. Methodical Recommendations (Sokolovskyi Inst. of Soil Sci. and Agricult. Chem., Kharkiv, 2004) (in Ukrainian).
2. 2. D.L. Kotova, T.A. Devyatova, T.A. Krysanova, N.K. Babenko, and V.A. Krysanov, Methods of Soil Quality Monitoring (Voronezh State Univ., Voronezh, 2007) (in Russian).
3. A Practical Approach to Quantitative Metal Analysis of Organic Matrices
4. Analytical techniques for trace element analysis: an overview
5. 5. S.S. Pop, S.F. Belykh, V.G. Drobnich, and V.Kh. Ferleger, Ion-Photon Emission of Metals (FAN, Tashkent, 1989) (in Russian).