  It is shown that the criticism (revised version) made in hep-th/0007108 (by
Jentschura and Weniger) on hep-th/0006057 has no valid ground. Furthemore we
emphasize that the concept of the electric-magnetic duality used in the
analysis of QED one-loop effective action in physics/0010038 (by Jentschura)
has first been introduced in hep-th/0006057.
