Sirasuntorn N, Jongjit D, Srichai P, Kwanta W. Certain Cyclic Hypergroups with Property of Subhypergroup Indices. BUU SCI J [internet]. 2024 Sep. 9 [cited 2025 Apr. 3];29(3 September-December):889-901. available from: https://li05.tci-thaijo.org/index.php/buuscij/article/view/432