CLBAS - On-line Catalog of the Libraries of the Bulgarian Academy of Sciences

BOOKS - On-line Books Catalog of the Libraries of the Bulgarian Academy of Sciences

NEWBK - On-line Catalog of the NEW Books of the Libraries of the Bulgarian Academy of Sciences

SERIALS - On-line Serials Catalog of the Libraries of the Bulgarian Academy of Sciences

BULG - On-line Medieval Manuscripts Catalog of the Libraries of the Bulgarian Academy of Sciences (microfilms and photocopies)

HUNG - Bulgarian HUNGARICA (On-line Catalog of the Libraries of the Bulgarian Academy of Sciences)

Cyrillo-Methodian Bibliography - e-bibliography collected by CMRC

Library of the Foundation of the Orthodox Churches of the Bulgarian Exarchate in Istanbul

Church archive of the Foundation of the Orthodox Churches of the Bulgarian Exarchate in Istanbul

NNP Bulgarian Studies

AUTDB - Authority Database of the Central Library of the Bulgarian Academy of Sciences

AUT - Authority Database of the Central Library of the Bulgarian Academy of Sciences for Authors

ACAD1 - Authority Database of the Honorary Members, Academicians (Full Members) and Corresponding Members of the Bulgarian Academy of Sciences (1869 - 2023)

SUB - Authority Database of the Central Library of the Bulgarian Academy of Sciences for Subjects

SRS - Authority Database of the Central Library of the Bulgarian Academy of Sciences for Series Titles