@article{GDZPPN002043580,
title = {Semi-effective numberings and definitions of the computable numbers.},
journal = {Archiv f\"ur mathematische Logik und Grundlagenforschung},
volume = {11},
year = {1967},
pages = {113-125},
zbl = {0179.01901},
url = {http://dml.mathdoc.fr/item/GDZPPN002043580}
}
Mayoh, B.H. Semi-effective numberings and definitions of the computable numbers.. Archiv für mathematische Logik und Grundlagenforschung, Tome 11 (1967) pp. 113-125. http://gdmltest.u-ga.fr/item/GDZPPN002043580/