The analysis of toxic connections content in water by spectral methods / I. V. Plotnikova, O. N. Chaikovskaya, I. V. Sokolova, V. R. Artyushin // Journal of Physics: Conference Series. 2017. Vol. 881. P. 012006 (1-6). URL: http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000620387