Indic Transliteration Standards in Cyrillic & Greek

Hi,

These are several standards for transliterating Indic script to Roman
characters such as IAST, ISO 15919 etc.

I would like to know if any similar standards exist for expressing the
Indic set in Greek & Cyrillic with special diacritics.

If they do exist, any pointers to their Unicode representations.

Thanks

V

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