@article {Nikolova1979, title = {Premi{\`e}re conf{\'e}rence complexe d{\textquoteright}{\'e}tudes bulgares}, journal = {Palaeobulgarica / Старобългаристика}, volume = {3}, year = {1979}, pages = {51{\textendash}64}, author = {Nikolova, Svetlina and Kabak{\v c}iev, Jurij and Atanasov, Atanas} } @article {Nikolova1977, title = {Nouvelles recherches sur la vie et l{\textquoteright}oeuvre de Cyrille et M{\'e}thode}, journal = {Palaeobulgarica / Старобългаристика}, volume = {1}, year = {1977}, pages = {34{\textendash}49}, author = {Nikolova, Svetlina} }