Skrobian, Milan, and Rudolf Pernis. “MATHEMATICAL EQUATION FOR IMPURITY DISTRIBUTION AFTER SECOND PASS OF ZONE REFINING”. Acta Metallurgica Slovaca 27, no. 1 (February 25, 2021): 32–35. Accessed April 30, 2026. https://office.journal-ams.org/index.php/AMS/article/view/808.