%0 Journal Article %T Yang-Mills Models in the Causal Approach: Perturbation Theory up to the Second Order %A Dan-Radu Grigore %J Physics %D 2015 %I arXiv %X We consider the standard model up to the second order of the perturbation theory (in the causal approach) and derive the most general form of the interaction Lagrangian for an arbitrary number of Higgs fields. %U http://arxiv.org/abs/1505.02367v1