| Issue Date | Title | Author(s) | Publisher |
| 2006 | Recognition on Finite Set of Events: Bayesian Analysis of Generalization Ability and Classification Tree Pruning | Berikov, Vladimir | Institute of Information Theories and Applications FOI ITHEA |
| 2008 | Recognizing Decomposition of a Partial Boolean Function | Zakrevskij, Arkadij | Institute of Information Theories and Applications FOI ITHEA |
| 2013 | Recovering Valuable Artifacts of the Cultural Heritage through Modern Technology and Equipment | Pavlova, Lilia; Draganov, Lubomil | Institute of Mathematics and Informatics Bulgarian Academy of Sciences |
| 2005 | Recursive Methods for Construction of Balanced N-ary Block Designs | Gheribi-Aoulmi, Z.; Bousseboua, M. | Institute of Mathematics and Informatics Bulgarian Academy of Sciences |
| 8-Jun-2022 | Reduced Basis Approximation for a Spatial Lotka-Volterra Model | Rashkov, Peter | MDPI |
| 2008 | Reduction Measurements for Calculation in Fuzzy Experiment Scheme | Zavorotnyy, Andriy; Kasyanyuk, Veda | Institute of Information Theories and Applications FOI ITHEA |
| 2013 | A Refinement of some Overrelaxation Algorithms for Solving a System of Linear Equations | Kyurkchiev, Nikolay; Iliev, Anton | Institute of Mathematics and Informatics Bulgarian Academy of Sciences |
| Oct-1994 | A Refinment of a Local Limit Theorem for a Branching Process Conditioned on the Total Progeny | Kerbashev, Tzvetozar B. | Institute of Mathematics with Computer Center at the Bulgarian Academy of Sciences |
| 22-Nov-2010 | Reflection in Studying Electronic Tables at School | Kosta, Garov; Elena, Todorova | University Press "Paisii Hilendarski", Plovdiv |
| 1-Dec-2019 | Reflection of the Idea of Conservation of the Intangible Heritage in the Processes of Chromatic Keypad of the Harmonics | Kravtsov, Nikolay | Institute of Mathematics and Informatics – Bulgarian Academy of Sciences |
| 1954 | Regelscharen isotroper Geraden im elliptischen Raum | Petkantschin, B. | Bulgarian Academy of Sciences |
| 1956 | Regelscharen isotroper Geraden in der zweiachsigen Geometrie | Petkantschin, B. | Bulgarian Academy of Sciences |
| 2017 | Regions of Convergence of Dirichlet’s, Newton’s and Factorial Series | Rusev, Peter | Institute of Mathematics and Informatics at the Bulgarian Academy of Sciences |
| 29-Jun-2021 | Registering and Processing of a Photoplethysmography Signals | Cheshmedzhiev, Krasimir | Institute of Mathematics and Informatics – Bulgarian Academy of Sciences |
| 1998 | Regular and Other Kinds of Extensions of Topological Spaces | Dimov, G. | Institute of Mathematics and Informatics Bulgarian Academy of Sciences |
| 2004 | Regular Averaging and Regular Extension Operators in Weakly Compact Subsets of Hilbert Spaces | Argyros, Spiros; Arvanitakis, Alexander | Institute of Mathematics and Informatics Bulgarian Academy of Sciences |
| 2008 | Régularité Lipschitzienne des Géodésiques Minimisantes pour Quelques Distributions Affines | Bensalem, Naceurdine | Institute of Mathematics and Informatics Bulgarian Academy of Sciences |
| 2013 | Regularity of Set-Valued Maps and their Selections through Set Differences. Part 1: Lipschitz Continuity | Baier, Robert; Farkhi, Elza | Institute of Mathematics and Informatics at the Bulgarian Academy of Sciences |
| 2013 | Regularity of Set-Valued Maps and Their Selections through Set Differences. Part 2: One-Sided Lipschitz Properties | Baier, Robert; Farkhi, Elza | Institute of Mathematics and Informatics at the Bulgarian Academy of Sciences |
| 2007 | A Relation between the Weyl Group W(e8) and Eight-Line Arrangements on a Real Projective Plane | Fukui, Tetsuo; Sekiguchi, Jiro | Institute of Mathematics and Informatics Bulgarian Academy of Sciences |
