1. Differential equations. (2019) Authors: Oleĭnik, O. A Record Type: Book Extent: 1 online resource View Content: Available online (eLD content is only available in our Reading Rooms) ↗
2. I.g.petrovskii:selected wrks p. (2023) Authors: Petrovskiĭ, I. G (Ivan Georgievich) Editors: Oleĭnik, O. A Other Names: Yosifian, G. A translator. Record Type: Book Extent: 1 online resource View Content: Available online (eLD content is only available in our Reading Rooms) ↗