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

Cyrillic Letters	Roman Letters
А а	A a
Б б	B b
В в	V v
Г г	G g
Д д	D d
Е е	E e
Ё ё	E e
Ж ж	Zh zh
З з	Z z
И и	I i
Й й	I i
К к	K k
Л л	L l
М м	M m
Н н	N n
О о	O o
П п	P p
Р р	R r
С с	S s
Т т	T t
У у	U u
Ф ф	F f
Х х	Kh kh
Ц ц	Ts ts
Ч ч	Ch ch
Ш ш	Sh sh
Щ щ	Shch shch
Ъ ъ	“ (hard sign)
Ы ы	Y y
Ь ь	‘ (soft sign)
Э э	E e
Ю ю	IU iu
Я я	IA ia