IZVESTIYA na MATEMATICHESKIYA INSTITUT.
BULGARSKA AKADEMIYA na NAUKITE.
Sofia,1(1953/54)-15(1974). -Izv.Mat.Inst.Bulgar.Akad.Nauk |
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Publisher : Bulgarian Academy of Sciences |
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-Bulletin de Institut de Mathematiques. Academie Bulgare des Sciences. Sect. de Mathematiques et de Physique.[1(1903)-48(1952)] | Serdica |