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Volume 239, Issue 1
May 2019This issue is a translation of Ukrains’kiĭ Matematychnyĭ Visnyk (Ukrainian Mathematical Bulletin) Vol. 15, No. 2, 2018. International Editorial Board of Ukrains’kiĭ Matematychnyĭ Visnyk: M. Atiyah, B. Bojarski, A. Friedman, O. Martio, L. Nirenberg, A. Samoilenko (Editor-in-Chief).
9 articles in this issue