A heuristic process on the existence of positive bases with applications to minimum-cost portfolio insurance in C[a, b]. - Vasilios N. Katsikis; Spyridon D. Mourtas (Appl. Math. Comput., 2019)

Time-varying minimum-cost portfolio insurance under transaction costs problem via Beetle Antennae Search Algorithm (BAS). - Vasilios N. Katsikis; Spyridon D. Mourtas; Predrag S. Stanimirovic; Shuai Li 002; Xinwei Cao (Appl. Math. Comput., 2020)

Time-varying Black-Litterman portfolio optimization using a bio-inspired approach and neuronets. - Theodore E. Simos; Spyridon D. Mourtas; Vasilios N. Katsikis (Appl. Soft Comput., 2021)

Continuous-Time Varying Complex QR Decomposition via Zeroing Neural Dynamics. - Vasilios N. Katsikis; Spyridon D. Mourtas; Predrag S. Stanimirovic; Yunong Zhang (Neural Process. Lett., 2021)

Time-Varying Mean-Variance Portfolio Selection under Transaction Costs and Cardinality Constraint Problem via Beetle Antennae Search Algorithm (BAS). - Vasilios N. Katsikis; Spyridon D. Mourtas; Predrag S. Stanimirovic; Shuai Li 002; Xinwei Cao (Oper. Res. Forum, 2021)

A multi-input with multi-function activated weights and structure determination neuronet for classification problems and applications in firm fraud and loan approval. - Theodore E. Simos; Vasilios N. Katsikis; Spyridon D. Mourtas (Appl. Soft Comput., 2022)

Time-varying mean-variance portfolio selection problem solving via LVI-PDNN. - Vasilios N. Katsikis; Spyridon D. Mourtas; Predrag S. Stanimirovic; Shuai Li 002; Xinwei Cao (Comput. Oper. Res., 2022)

Exploiting the Black-Litterman framework through error-correction neural networks. - Spyridon D. Mourtas; Vasilios N. Katsikis (Neurocomputing, 2022)

A higher-order zeroing neural network for pseudoinversion of an arbitrary time-varying matrix with applications to mobile object localization. - Theodore E. Simos; Vasilios N. Katsikis; Spyridon D. Mourtas; Predrag S. Stanimirovic; Dimitrios Gerontitis (Inf. Sci., 2022)

Finite-time convergent zeroing neural network for solving time-varying algebraic Riccati equations. - Theodore E. Simos; Vasilios N. Katsikis; Spyridon D. Mourtas; Predrag S. Stanimirovic (J. Frankl. Inst., 2022)

Multi-input bio-inspired weights and structure determination neuronet with applications in European Central Bank publications. - Theodore E. Simos; Vasilios N. Katsikis; Spyridon D. Mourtas (Math. Comput. Simul., 2022)

Unique non-negative definite solution of the time-varying algebraic Riccati equations with applications to stabilization of LTV systems. - Theodore E. Simos; Vasilios N. Katsikis; Spyridon D. Mourtas; Predrag S. Stanimirovic (Math. Comput. Simul., 2022)

A fuzzy WASD neuronet with application in breast cancer prediction. - Theodore E. Simos; Vasilios N. Katsikis; Spyridon D. Mourtas (Neural Comput. Appl., 2022)

Zeroing Neural Network With Fuzzy Parameter for Computing Pseudoinverse of Arbitrary Matrix. - Vasilios N. Katsikis; Predrag S. Stanimirovic; Spyridon D. Mourtas; Lin Xiao 002; Darjan Karabasevic; Dragisa Stanujkic (IEEE Trans. Fuzzy Syst., 2022)

Solving Complex-Valued Time-Varying Linear Matrix Equations via QR Decomposition With Applications to Robotic Motion Tracking and on Angle-of-Arrival Localization. - Vasilios N. Katsikis; Spyridon D. Mourtas; Predrag S. Stanimirovic; Yunong Zhang (IEEE Trans. Neural Networks Learn. Syst., 2022)

Time-varying minimum-cost portfolio insurance problem via an adaptive fuzzy-power LVI-PDNN. - Vasilios N. Katsikis; Spyridon D. Mourtas; Predrag S. Stanimirovic; Shuai Li 002; Xinwei Cao (Appl. Math. Comput., 2023)

Improvement of Unconstrained Optimization Methods Based on Symmetry Involved in Neutrosophy. - Predrag S. Stanimirovic; Branislav Ivanov; Dragisa Stanujkic; Vasilios N. Katsikis; Spyridon D. Mourtas; Lev A. Kazakovtsev; Seyyed Ahmad Edalatpanah (Symmetry, 2023)

Stabilization of Stochastic Exchange Rate Dynamics Under Central Bank Intervention Using Neuronets. - Spyridon D. Mourtas; Vasilios N. Katsikis; Emmanouil Drakonakis; Stelios Kotsios (Int. J. Inf. Technol. Decis. Mak., 2023)

Solving Time-Varying Nonsymmetric Algebraic Riccati Equations With Zeroing Neural Dynamics. - Theodore E. Simos; Vasilios N. Katsikis; Spyridon D. Mourtas; Predrag S. Stanimirovic (IEEE Trans. Syst. Man Cybern. Syst., 2023)

Zeroing Neural Network Based on Neutrosophic Logic for Calculating Minimal-Norm Least-Squares Solutions to Time-Varying Linear Systems. - Vasilios N. Katsikis; Predrag S. Stanimirovic; Spyridon D. Mourtas; Lin Xiao 002; Dragisa Stanujkic; Darjan Karabasevic (Neural Process. Lett., 2023)

Zeroing neural network approaches for computing time-varying minimal rank outer inverse. - Predrag S. Stanimirovic; Spyridon D. Mourtas; Dijana Mosic; Vasilios N. Katsikis; Xinwei Cao; Shuai Li 002 (Appl. Math. Comput., 2024)

Solving Lur'e equations through zeroing neural networks. - Yu He; Xiaojuan Wang; Yafei Tie; Huanqi Yang; Theodore E. Simos; Spyridon D. Mourtas; Vasilios N. Katsikis (Inf. Sci., 2025)

A Zeroing Neural Network Approach for Calculating Time-Varying G-Outer Inverse of Arbitrary Matrix. - Predrag S. Stanimirovic; Spyridon D. Mourtas; Dijana Mosic; Vasilios N. Katsikis; Xinwei Cao; Shuai Li 002 (IEEE Trans. Neural Networks Learn. Syst., 2025)