@第{zbMATH05522020条，作者={Cenzer，Douglas and LaForte，Geoffrey and Wu，Guohua}，标题={伪跳跃和{{\（\Pi^0_1\）}}类}，FJournal={逻辑与计算杂志}，日志={J.Log.Comput.}，ISSN={0955-792X}，体积={19}，数字={1}，页码={77--87}，年份={2009}，语言={英语}，DOI={10.1093/logcom/exn028}，关键词={03D25,03D30}，zbMATH＝{5522020}，Zbl={1158.03024}}