| Subject | English | Russian |
| math. | finding of an effective method for | нахождение эффективного метода (the finding of an effective method for bounding this norm remains a challenging open problem) |
| math. | the finding of an effective method for bounding this norm remains a challenging open problem | отыскание эффективного метода |
| math. | the finding of an effective method for bounding this norm remains a challenging open problem | остаётся открытой проблемой |