Puniškis, D., and R. Laurutis. “Behavior Statistic Based Neural Net Anti-Spam Filters”. Elektronika ir Elektrotechnika 78, no. 6 (July 22, 2007): 35-38. Accessed September 28, 2022. https://eejournal.ktu.lt/index.php/elt/article/view/10811.