Rights and permissions
About this article
Cite this article
Gonzalez, E., Dzhabbarov, I.S. & Zvyagin, M.Y. Letters to the editor. Mathematical Notes of the Academy of Sciences of the USSR 40, 933–934 (1986). https://doi.org/10.1007/BF01158354
Issue Date:
DOI: https://doi.org/10.1007/BF01158354