For citations:
Chayka A.A., Shaglaeva N.S., Bozhenkov G.V., Bayandin V.V., Rudyakova E.V., Ivanov Yu.N. Synthesis of the Ultem series polyetherimides. Proceedings of Universities. Applied Chemistry and Biotechnology. 2023;13(3):325-332. (In Russ.) https://doi.org/10.21285/2227-2925-2023-13-3-325-332. EDN: TAGABT