Two of James' three quasi-reflexive spaces, as well as the James Tree, have the uniform $w^{\ast }$-Opial property.
@article{118667,
author = {Tadeusz Kuczumow and Simeon Reich},
title = {Opial's property and James' quasi-reflexive spaces},
journal = {Commentationes Mathematicae Universitatis Carolinae},
volume = {35},
year = {1994},
pages = {283-289},
zbl = {0818.46019},
mrnumber = {1286575},
language = {en},
url = {http://dml.mathdoc.fr/item/118667}
}
Kuczumow, Tadeusz; Reich, Simeon. Opial's property and James' quasi-reflexive spaces. Commentationes Mathematicae Universitatis Carolinae, Tome 35 (1994) pp. 283-289. http://gdmltest.u-ga.fr/item/118667/
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