http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Mezhdunareden t︠s︡entŭr za nauchni izsledvanii︠a︡ i dokumentat︠s︡ii︠a︡ (Institut za balkanistika)
T︠S︡entŭr za informat︠s︡ii︠a︡ i dokumentat︠s︡ii︠a︡ po balkanistika (Institut za balkanistika "Li︠u︡dmila Zhivkova")
Académie bulgare des sciences, Institut d'études balkaniques, Centre international de recherches scientifiques et de documentation.
Issued -1979 by: Centre international de recherches scientifiques et de documentation, Institut za balkanistika "Li︠u︡dmila Zhivkova"; 1980- by: T︠S︡entŭr za informat︠s︡ii︠a︡ i dokumentat︠s︡ii︠a︡ po balkanistika, Institut za balkanistika "Li︠u︡dmila Zhivkova."