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Inżynieria Mineralna > 2021 > no. 1 > 25--31
Ecological Engineering & Environmental Technology > 2021 > Vol. 22, iss. 6 > 114--121
Ecological Chemistry and Engineering. S > 2021 > Vol. 28, nr 3 > 355--363
Polish Journal of Medical Physics and Engineering > 2021 > Vol. 27, Iss. 3 > 233--239