Text ( visual ) : unmediated Queues / D.R. Cox and Walter L. Smith. -- : pbk. -- London : Chapman and Hall , 1971. -- xii, 180 p. : ill. ; 19 cm. -- (Monographs on applied probability and statistics ; 2). -- First published 1961 by Methuen, in series: Monographs on statistical subjects ; "Monographs on statistical subjects"--Half title page ; "Reprinted 1971 by Chapman & Hall"--T.p. verso ; Includes bibliographical references and indexes ; Some copies have series number. -- ISBN 0412109301 ; (BA04221978) ; https://ci.nii.ac.jp/ncid/BA04221978 Author Heading(s): Cox, D. R. (David Roxbee) ; Smith, Walter L.. -- Classification(s): LCC : QA273 ; DC : 519. -- Subject Heading(s): LCSH : Queuing theory