@第{zbMATH06348654条,作者={卡伦·霍特,S.},标题={循环和树},FJournal={高能物理杂志},期刊={J.高能物理学},ISSN={1126-6708},卷={2011},数字={5},页码={43},注={Id/编号080},年份={2011},语言={英语},DOI={10.1007/JHEP05(2011)080},关键词={81V05,81T60.81T15,81T18},zbMATH={6348654},Zbl={1296.81128}}