[Wien] Option of LDA by perdew and zunger?

[Arin]

Dear wien user:
I read a paper calculated by wien2k. (J.Phys.Condens.Matter 16 2004
303-312). I noticed he used the LDA of Ceperly and Alder with
parameterization by Perdew and Zunger (Phys.Rev. B 23, 5048,1981). I
remember the LDA in wien2k is parametered by Perdew and Wang 1992. What's
the difference? Thanks.
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