by Goetze, B, Klette, R and Gillo, D
Reference:
Der Iterierte Limes Rekursiver Funktionen und Die Arithmetische Hierarchie (Goetze, B, Klette, R and Gillo, D), In Mathematical Logic Quarterly, volume 23, 1977.
Bibtex Entry:
@article{goetze1977derhierarchie, author = "Goetze, B and Klette, R and Gillo, D", journal = "Mathematical Logic Quarterly", pages = "265--272", title = "Der Iterierte Limes Rekursiver Funktionen und Die Arithmetische Hierarchie", volume = "23", year = "1977", doi = "10.1002/malq.19770231603", issn = "0942-5616", eissn = "1521-3870", issue = "16-17", language = "ger", }