Georgieva M, Bakeva V. SOME CHARACTERISTICS OF OUTPUT STREAM OF UNSERVED CUSTOMERS IN \(G^X/G/1\) AND \(G_D^X/G_D/1\) SYSTEM. Mat. Bilt. 2000;24(1):131-140. Accessed August 14, 2026. https://bilten.smm.org.mk/index.php/bilten/article/view/1652