A necessary and sufficient condition for input identifiability for linear time-invariant systems. - Tihomir B. Gyulov; Gheorghe Morosanu (Appl. Math. Lett., 2009)

American option pricing problem transformed on finite interval. - Tihomir B. Gyulov; Radoslav L. Valkov (Int. J. Comput. Math., 2016)

Efficient finite difference method for optimal portfolio in a power utility regime-switching model. - Tihomir B. Gyulov; Miglena N. Koleva; Lubin G. Vulkov (Int. J. Comput. Math., 2019)

Fitted finite volume method for indifference pricing in an exponential utility regime-switching model. - Tihomir B. Gyulov; Miglena N. Koleva; Lubin G. Vulkov (J. Comput. Appl. Math., 2021)

Gradient Optimization in Reconstruction of the Diffusion Coefficient in a Time Fractional Integro-Differential Equation of Pollution in Porous Media. - Tihomir B. Gyulov; Lubin G. Vulkov (MDIS, 2022)