Third-order results for the structure functions of charged-current deep-inelastic scattering are discussed. New results for 11th Mellin moment for F_2,L^(nu P - nubar P) structure functions and 12th moment for F_3^(nu P - nubar P) are presented as well as corresponding higher Mellin moments of differences between the respective crossing-even and -odd coefficient functions. Approximations in Bjorken-x space for these differences obtained with lowest five moments as well as consistency of new results with these approximations are discussed. The 1/N_c suppression of the differences is shown and the correction to the Paschos-Wolfenstein relation is discussed.
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