auto_ptr shared_ptr homogeneous managed c++/cli classes

in c++/cli , internal forms managed category certified reason member internal category managed category : need pointers case.

here an instance :

class nativeclass
{
....
};


public ref category managedclass
{
private:
  nativeclass mnativeclass; // certified !

  nativeclass * mnativeclass; // ok

  auto_ptr<nativeclass> mnativeclass; //not certified !
  boost::shared_ptr<nativeclass> mnativeclass; //not certified !

};

does anyone know an homogeneous shared_ptr c++/cli world?

edit:
thanks your suggestion, "1800-information". following your suggestion, i checked stl.net nonetheless wholly accessible visible studio 2008, provides containers + algorithms, nonetheless intelligent pointers.