| Issue Date | Title | Author(s) | Publisher |
| 2015 | Application of the Improved Concavity Method to Sixth Order Boussinesq Equations with Arbitrary High Initial Energy | Kutev, N.; Dimova, M.; Kolkovska, N. | Institute of Mathematics and Informatics at the Bulgarian Academy of Sciences |
| 2019 | Existence of Classical Solutions of Linear Non-Cooperative Elliptic Systems | Boyadzhiev, G.; Kutev, N. | Institute of Mathematics and Informatics at the Bulgarian Academy of Sciences |
| 2015 | Finite Time Blow up of the Solutions to Nonlinear Klein-Gordon Equation with Arbitrary High Positive Initial Energy | Kutev, N.; Kolkovska, N.; Dimova, M. | Institute of Mathematics and Informatics at the Bulgarian Academy of Sciences |
| 2014 | Global Behavior of the Solutions to Sixth Order Boussinesq Equation with Linear Restoring Force | Kutev, N.; Kolkovska, N.; Dimova, M. | Institute of Mathematics and Informatics at the Bulgarian Academy of Sciences |
| 2016 | Global Solvability to Double Dispersion Equation with Bernoulli Type Nonlinearity via One Parametric Family of Potential Wells | Kutev, N.; Dimova, M.; Kolkovska, N. | Institute of Mathematics and Informatics at the Bulgarian Academy of Sciences |
| 2012 | Interior Boundaries for Degenerate Elliptic Equations of Second Order Some Theory and Numerical Observations | Chobanov, G.; Kutev, N. | Institute of Mathematics and Informatics Bulgarian Academy of Sciences |
| Jul-2003 | Maximum Principle for Linear Second Order Elliptic Equations in Divergence Form | Fabricant, A.; Kutev, N.; Rangelov, T. | Institute of Mathematics and Informatics at the Bulgarian Academy of Sciences |
| 2018 | Maximum Principle for Weakly Coupled Linear Non-Cooperative Systems | Boyadzhiev, G.; Kutev, N. | Institute of Mathematics and Informatics at the Bulgarian Academy of Sciences |
| 2018 | Necessary and Sufficient Condition for Finite Time Blow up of the Solutions to Sixth Order Double Dispersive Equations | Kutev, N.; Kolkovska, N.; Dimova, M. | Institute of Mathematics and Informatics at the Bulgarian Academy of Sciences |
| 2003 | On Principle Eigenvalue for Linear Second Order Elliptic Equations in Divergence Form | Fabricant, A.; Kutev, N.; Rangelov, T. | Institute of Mathematics and Informatics Bulgarian Academy of Sciences |
| 2019 | Orbital Stability of Solitary Waves to Fourth Order Dispersive Equations with Quadratic Nonlinearity | Kolkovska, N.; Dimova, M.; Kutev, N. | Institute of Mathematics and Informatics at the Bulgarian Academy of Sciences |
| Jun-2015 | Revised concavity method and applications to nonlinear dispersive equations | Kutev, N.; Kolkovska, N.; Dimova, M. | Institute of Mathematics and Informatics at the Bulgarian Academy of Sciences |
