Rindzevičius, R., M. Augustaitis, P. Tervydis, and V. Pilkauskas. 2008. “Performance Measures of Priority Queuing Data Network Node With Unreliable Transmission Channel”. Elektronika Ir Elektrotechnika 83 (3):37-42. https://eejournal.ktu.lt/index.php/elt/article/view/11074.