Media type: E-Article Title: Asymptotic Optimality of Two Service Grades for Customer Differentiation in Queueing Systems Contributor: Nazerzadeh, Hamid; Randhawa, Ramandeep S. Published: Elsevier BV, 2014 Published in: SSRN Electronic Journal (2014) Language: English DOI: 10.2139/ssrn.2438300 ISSN: 1556-5068 Keywords: Pharmacology (medical) Origination: Footnote: