Li Y.
          G-covering systems of subgroups for 
          the class of supersoluble groups
        Let F be a class of groups. Given a group G, assign 
          to G some set of its subgroups Σ = Σ(G). We say that Σ is a G-covering 
          system of subgroups for F (or, in other words, an 
		  F-covering system 
          of subgroups in G) if G ∈ F wherever either 
		  Σ = Ø or Σ ≠ Ø and every 
          subgroup in Σ belongs to F. In this paper, we provide some nontrivial 
          sets of subgroups of a finite group G which are G-covering subgroup 
          systems for the class of supersoluble groups. These are the generalizations 
          of some recent results, such as in [1–3].