@article{GDZPPN002045915,
title = {Cupping and noncapping in the R.E. weak truth table and turing degrees.},
journal = {Archiv f\"ur mathematische Logik und Grundlagenforschung},
volume = {25},
year = {1985},
pages = {109-126},
zbl = {0619.03032},
url = {http://dml.mathdoc.fr/item/GDZPPN002045915}
}
Ambos-Spies, Klaus. Cupping and noncapping in the R.E. weak truth table and turing degrees.. Archiv für mathematische Logik und Grundlagenforschung, Tome 25 (1985) pp. 109-126. http://gdmltest.u-ga.fr/item/GDZPPN002045915/