@article{bwmeta1.element.bwnjournal-article-fmv82i1p15bwm,
author = {C. Yates},
title = {Prioric games and minimal degrees below $0^{(1)}$
},
journal = {Fundamenta Mathematicae},
volume = {85},
year = {1974},
pages = {217-237},
zbl = {0298.02042},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-fmv82i1p15bwm}
}
Yates, C. Prioric games and minimal degrees below $0^{(1)}$
. Fundamenta Mathematicae, Tome 85 (1974) pp. 217-237. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-fmv82i1p15bwm/