Павленко, В.М., Петко, І.В. and Хімічева, Г.І. 2009. Refinement demands for landings H8/u8, H8/x8 and H8/z8 under standard GOST 25347-82. Eastern-European Journal of Enterprise Technologies. 2, 5(38) (Apr. 2009), 38–41. DOI:https://doi.org/10.15587/1729-4061.2009.5978.