| Issue Date | Title | Author(s) | Publisher |
| 1957 | Über lineare Beziehungen zwischen Madelungkonstanten | Emersleben, Otto | Bulgarian Academy of Sciences |
| 1956 | Über Projektionen zweidimensionaler diskreter Verteilungen | Penkov, B. | Bulgarian Academy of Sciences |
| 2008 | An UML Project of a Task-Oriented Environment for Teaching Algorithms | Atanasova, Galina; Zheliazkova, Irina | Institute of Information Theories and Applications FOI ITHEA |
| 2007 | Uncertainty and Fuzzy Sets: Classifying the Situation | Donchenko, Volodymyr | Institute of Information Theories and Applications FOI ITHEA |
| 2010 | Understanding Computing through Defining its Lexicon | Bantchev, Boyko | Union of Bulgarian Mathematicians |
| 10-Aug-2022 | Understanding of the Notion "Drama of Perception", "Drama of the Senses" and "Aesthetic of Absence" in the Context of Visual Theatre | Georgieva, Nevena | Institute of Mathematics and Informatics – Bulgarian Academy of Sciences |
| 1963 | Une métode à calculer la fonction de fréquence d'un processus aléatoir, qui dépend d'un paramètre τ | Siméonoff, Em. | Bulgarian Academy of Sciences |
| 1960 | Une remarque sur le frottement dans les paliers glissants et les freins à mâchoire | Stoyanoff, A. | Bulgarian Academy of Sciences |
| 2012 | A Unified approach to the Structure Theory of PI-Rings and GPI-Rings | Brešar, Matej | Institute of Mathematics and Informatics Bulgarian Academy of Sciences |
| 2008 | A Unified Group-Theoretic Method on Improper Partial Semi-Bilateral Generating Functions | Sarkar, Asit Kumar | Institute of Mathematics and Informatics Bulgarian Academy of Sciences |
| 1996 | Uniform Convergence of the Newton Method for Aubin Continuous Maps | Dontchev, Asen | Institute of Mathematics and Informatics Bulgarian Academy of Sciences |
| 1997 | Uniform Eberlein Compacta and Uniformly Gâteaux Smooth Norms | Fabian, Marián; Hájek, Petr; Zizler, Václav | Institute of Mathematics and Informatics Bulgarian Academy of Sciences |
| 2009 | Uniform G-Convexity for Vector-Valued Lp Spaces | Boyko, Nataliia; Kadets, Vladimir | Institute of Mathematics and Informatics Bulgarian Academy of Sciences |
| 2000 | Uniformly Gâteaux Differentiable Norms in Spaces with Unconditional Basis | Rychter, Jan | Institute of Mathematics and Informatics Bulgarian Academy of Sciences |
| 2016 | A Unique Monument of Russian Book Culture | Pavlovska, Elena | Institute of Mathematics and Informatics Bulgarian Academy of Sciences |
| 1977 | Uniqueness on a Residual Part of Best Approximations in Banach Spaces | Kenderov, Petar S. | Institute of Mathematics and Informatics at the Bulgarian Academy of Sciences |
| 2010 | Units of F5kD10 | Gildea, Joe | Institute of Mathematics and Informatics Bulgarian Academy of Sciences |
| 1989 | Univalent Functions that are Local Extrema of Two Real Functionals | Starkov, Victor V. | Institute of Mathematics and Informatics at the Bulgarian Academy of Sciences |
| 2022 | Universal Bounds for Cardinalities and Energy of Codes in Hamming Spaces | Stoyanova, Maya | Institute of Mathematics and Informatics at the Bulgarian Academy of Sciences |
| 29-May-2020 | The Universal Decision - Appropriate Design for Heritage Objects | Dobrevski, Dimitar | Institute of Mathematics and Informatics – Bulgarian Academy of Sciences |
