Бутенко, А.М., Русінов, О.І., Лобойко, В.О. and Юрченко, Г.О. 2013. Effect of operation life of Ag/pumice catalyst on his efficiency. Eastern-European Journal of Enterprise Technologies. 2, 6(62) (Apr. 2013), 4–6. DOI:https://doi.org/10.15587/1729-4061.2013.11739.