Hello everyone!

It's my first post here.
Could anyone please explain me the behaviour of the following code?
<code>
   interface IFoo<T, P>
   {
       void Bar(T t, P p);        // (1)
       void Bar(P p1, P p2);   // (2)
   }

   class NastyFooImpl : IFoo<int, int>
   {
       void IFoo<int, int>.Bar(int t, int p)
       {
           Console.WriteLine("void IFoo<int, int>.Bar(int t, int
p)");
       }

       public void Bar(int p1, int p2)
       {
           Console.WriteLine("public void Bar(int p1, int p2)");
       }
   }

   class Program
   {
       static void Test<Foo, T, P> () where Foo : IFoo<T, P>, new()
       {
           Foo foo = new Foo();
           T t = default(T);
           P p = default(P);
           foo.Bar(t ,p);
           foo.Bar(p, p);
       }
       static void Main(string[] args)
       {
           Test<NastyFooImpl, int, int>();
       }
   }
</code>

The output I'm getting using Visual Studio 2005:
<code>
void IFoo<int, int>.Bar(int t, int p)
public void Bar(int p1, int p2)
</code>

When I swap lines (1) and (2), the order of lines of output changes as
well.
Any links are greatly appreciated, especially links to C#
specification.