%0 Journal Article %A S M Hosseini %A F Soltanian %A K Mamehrashi %T The Ritz numerical method and hybrid functions (block-pulse functions and Legendre polynomials) for a class of two-dimensional time-delay optimal control problems %J Filomat %D 2023 %P 5813 %V 37 %N 17 %U http://geodesic.mathdoc.fr/articles/10.2298/FIL2317813H/ %R 10.2298/FIL2317813H %G en %F 10_2298_FIL2317813H