In the journal "CHEMISTRY & CHEMICAL TECHNOLOGY" (2013, V. 7, No. 3, p. 359-364), an article by the authors of V. M. Shmalko, O. I. Zelensky and M. I. Rudkevich was published "TECHNOGENIC NANOPARTICLES FROM COAL CARBONIZATIONPRODUCTS TECHNOGENIC NANOPARTICLES FROM COAL CARBONIZATION PRODUCTS "