The 'xecyrmongolian' package can be used to produce
documents in Cyrillic Mongolian using either XeLaTeX
or LuaLaTeX. The command \setlanguage can be used to
load alternative hyphenation patterns so to be able to
create multilingual documents. 

16/12/2019

Apostolos Syropoulos      Bat-erdene Altangerel
Xanthi, Greece            Ulaanbaatar, Mongolia
asyropoulos@yahoo.com     echingiss@gmail.com