Andrej Bojadžiev, Assoc. Prof. PhD (Cyrillo-Methodian Department, Sofia University)
with the help of:
Cynthia Vakareliyska, Prof. (Uniersity of Oregon, Eugen, USA)
Gabriela Georgieva (Central Library of Bulgarian Academy of Sciences)
Margaret Dimitrova, Assoc. Prof. (Cyrillo-Methodian Department, Sofia University)
Roland Marti, Prof. (University of Saarland, Saarbrücken, FR Germany)