| Issue Date | Title | Author(s) | Publisher |
| 1970 | Deduction of the movement equations of material systems without applying the principles of D'Alembert-Lagrange and Hölder | Cenov, Ivan | Bulgarian Academy of Sciences |
| 1956 | Dem Alter nach aufgestellte Fertilitätsabellen der weiblichen Bevölkerung in Bulgarien für die Zeiträume 1905−1911, 1920−1926, 1926−1934, 1934−1939 | Simeonov, Em.; Zaikov, R.; Dochev, G.; Savov, Em.; Iliev, T.; Andreeva, M.; Keremidchiev, B. | Bulgarian Academy of Sciences |
| 1969 | Determination of the amplitudes of the parametric resonance of thin elastic plates and shells | Kislyakov, Sava | Bulgarian Academy of Sciences |
| 1970 | Development of Green's functions of linear partial differential operators in series of fundamental solutions and some of their applications to problems of spectral analysis in mathematical physics | Mangeron, D.; Šestopal, A. F. | Bulgarian Academy of Sciences |
| 1973 | Die Darstellbarkeit von Wortform-Mehrdeutigkeiten im Bulgarischen | Kunze, Jurgen; Ljudskanov, Aleksandar | Bulgarian Academy of Sciences |
| 1962 | Die irreduzible Elemente gewisser Kegel von analytischen Funktionen | Tagamlitzki, J. | Bulgarian Academy of Sciences |
| 1974 | Differential equations with retarded argument in locally convex spaces | Mosyagin, Valentin | Bulgarian Academy of Sciences |
| 1970 | Direct decompositions of projective modules | Čukanov, Vladimir | Bulgarian Academy of Sciences |
| 1972 | Duality in problems of the calculus of variations and optimal control | Tsvetanov, Mitko | Bulgarian Academy of Sciences |
| 1974 | Duality in variation problems with fixed endpoints | Cvetanov, Mitko | Bulgarian Academy of Sciences |
| 1974 | Duality in variation problems with free endpoints | Cvetanov, Mitko | Bulgarian Academy of Sciences |
| 1966 | Dynamics of the non-stationary regimes of movement of perforated tape | Ignatov, Nasko | Bulgarian Academy of Sciences |
| 1974 | An economico-mathematical model of the extended reproduction. | Peev, Simeon | Bulgarian Academy of Sciences |
| 1959 | Eine Bedingung für die Nichtfortsetzbarkeit der Potenzreihen | Iliev, L. | Bulgarian Academy of Sciences |
| 1959 | Eine Bemerkung zum Übertragungssatz | Jarník, Vojtěch | Bulgarian Academy of Sciences |
| 1960 | Eine Klasse von analytisch nichtfortsetzbaren Potenzreihen | Ilieff, Ljubomir | Bulgarian Academy of Sciences |
| 1959 | Ein elementargeometrischer Beweil des Sylvester-Frankeschen Determinantensatzes | Varga, O. | Bulgarian Academy of Sciences |
| 1958 | Eine Verallgemeinerung des Primzahlensatzes von Dirichlet | Golubev, V. A. | Bulgarian Academy of Sciences |
| 1959 | Einfache selbsterregte Schwingungen | Reissig, Rolf | Bulgarian Academy of Sciences |
| 1962 | Einführung von ∑f(x) und ∏f(x) in der rekursiven Gitterpunktarithmetik | Vučkovič, Vladeta | Bulgarian Academy of Sciences |
