[en] We present results on the experimental study of inelastic charged-current antineutrino-nucleon scattering in the energy range of 10-200 GeV. The data sample, consisting of about 6500 antineutrino-induced events, was obtained in the Fermilab 15 ft bubble chamber filled with a heavy neon-hydrogen mixture. The differential cross section for νsub(μ)N interactions are presented in terms of scaling variables x and y. The structure functions Fsup(ν)₂ and xFsup(ν)₃ have been evaluated as functions of x and E-sub(ν). A deviation from the scaling hypothesis, similar to those found in other experiments on inelastic lepton-nucleon scattering, has been observed. The data are interpreted in the framework of the quark-parton model. Quark and antiquark distributions and their energy dependences are presented. (orig.)