Ravindra Bonde, Dipak, and Jayprakash Ninu Chaudhari. “On α-Prime Ideals in the Semiring of Non-Negative Integers”. The Journal of the Indian Mathematical Society 88, no. 3-4 (June 14, 2021): 250–257. Accessed May 17, 2024. http://www.informaticsjournals.com/index.php/jims/article/view/27833.