The article titled “State-of-the-Art Computations of Vertical Ionization Potentials with the Extended Koopmans' Theorem Integrated with the CCSD(T) Method”, published by Assoc. Prof. Dr Uğur Bozkaya, faculty member of the Chemistry Department of the Faculty of Science at our University, together with PhD student Aslı Ünal, It was published as the cover study of the May 3 issue of The Journal of Physical Chemistry A.