Ivanov, V., Pirozhkova, V. and Lunеv V. 2016. Research of structure and formation of nodular graphite inclusions in ductile cast iron. Eastern-European Journal of Enterprise Technologies. 3, 5(81) (Jun. 2016), 31–36. DOI:https://doi.org/10.15587/1729-4061.2016.69674.