Belgin, Ö., and B. Gülşah. “RF-Matrices of Arf Numerical Semigroups With Small Multiplicity”. Communications in Mathematics and Applications 14, no. 2 (September 18, 2023): 937–948. Accessed June 16, 2025. http://www.journals.rgnpublications.com/index.php/cma/article/view/2126.