Kakalik, James S., Optimal service policy for the M/G/1 queue with multiple classes of arrivals / by James S. Kakalik and John D.C. Little - 18 pages ; 28 cm. - The Rand paper series; P-4525 . - The Rand paper series; P-4525 . Includes bibliographical references: page 18 Subjects--Topical Terms: Operations research.