@第{zbMATH07784699条，作者={Ebanks，Bruce}，标题={余弦减法}，FJournal＝{数学方程式}，期刊={Aequationes数学}，ISSN={0001-9054}，体积={97}，数字={5-6}，页码={995--1010}，年份={2023}，语言={英语}，DOI={10.1007/s00010-023-00971-0}，关键词={39B52,39B32,39B72,39B42}，zbMATH={7784699}，Zbl={1530.39018}}