@article{GDZPPN002044927,
title = {Choice sequences and reduction processes.},
journal = {Archiv f\"ur mathematische Logik und Grundlagenforschung},
volume = {19},
year = {1978},
pages = {31-50},
zbl = {0404.03046},
url = {http://dml.mathdoc.fr/item/GDZPPN002044927}
}
Haberthür, R. Choice sequences and reduction processes.. Archiv für mathematische Logik und Grundlagenforschung, Tome 19 (1978) pp. 31-50. http://gdmltest.u-ga.fr/item/GDZPPN002044927/