@article{oai:soar-ir.repo.nii.ac.jp:00011786, author = {Higuchi, K and Higuchi, M}, issue = {3}, journal = {PHYSICAL REVIEW B}, month = {Jan}, note = {The coupling-constant expression and virial relation for the exchange-correlation energy functional of the extended-constrained search theory [M. Higuchi and K. Higuchi, Phys. Rev. B 69, 035113 (2004)] are derived. These provide the guideline for developing and testing the approximate form of the exchange-correlation energy functional., Article, PHYSICAL REVIEW B. 71(3):035116 (2005)}, title = {Exchange-correlation energy functional and virial theorem in the extended constrained-search theory}, volume = {71}, year = {2005} }