Team, S. “Generalizations of $n$-Absorbing Ideals of Commutative Semirings: Pattarawan Petchkaew, Amorn Wasanawichit, Sajee Pianskool”. Thai Journal of Mathematics, vol. 14, no. 2, Aug. 2016, pp. 477-89, https://thaijmath2.in.cmu.ac.th/index.php/thaijmath/article/view/611.