Error: The type or namespace name 'Logic' does not exist in the namespace 'Game.Logic.AI.Game'

  

Error 12 The type or namespace name 'Logic' does not exist in the   namespace 'Game.Logic.AI.Game' (are you missing an assembly   reference?)

How can I solve it? I already have a project named Game.Logic and my code looks like this:

  namespace Game.Logic.AI.Game
{
    using Game.Logic.AI;

    public class GControl0 : APVEGameControl
    {
        public static readonly GControl0 Simple = new GControl0();
    }
}