OSA uses Romanization Tables developed by the Library of Congress and approved by the American Library Association.

ALA-LC Romanization Tables. Transliteration Schemes for Non-Roman Scripts:

https://www.loc.gov/catdir/cpso/roman.html

Take care to avoid modifier characters (ligature marks) as they are not always widely supported in display and printing.

Example: "литературная энциклопедия" transliterates NOT as "literaturnai͡a ėnt͡siklopedii͡a" but as "literaturnaia entsiklopediia"

Note: The Ђ ђ letters are considered obsolete in modern Russian. These characters are found primarily in pre-revolutionary and emigré publications. (Transliterate as IE ie.)

Romanization Table for transliterating modern Russian texts