no. 1
The Intermittent Server
Publications du Département de mathématiques (Lyon), Tome 15 (1978) no. 1, pp. 83-95. 
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     author = {Keller, J. P.},
     title = {The {Intermittent} {Server}},
     journal = {Publications du D\'epartement de math\'ematiques (Lyon)},
     pages = {83--95},
     publisher = {Universit\'e Claude Bernard - Lyon 1},
     volume = {15},
     number = {1},
     year = {1978},
     mrnumber = {545756},
     zbl = {0418.60091},
     language = {en},
     url = {http://www.numdam.org/item/PDML_1978__15_1_83_0/}
}
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Keller, J. P. The Intermittent Server. Publications du Département de mathématiques (Lyon), Tome 15 (1978) no. 1, pp. 83-95. http://www.numdam.org/item/PDML_1978__15_1_83_0/

(1) J.R. Jackson, Jobshop-like Queuing systems,Management Sciences, 10 (1963).

(2) Currently associated with Citibank, N.Y.

(3) Currently at N.Y.U.

(4) L. Kleinrock, Queuing systems, Vol. 1, J. Wiley and sons (1975).

(5) J. Keisler, Elementary Calculus, Prindle and Co (1976). | Zbl

(6) M. Davis, Applied Non-standard Analysis, J. Wiley and sons (1977). | MR | Zbl

(7) K.D. Stroyan, WAJ Luxemburg, Introduction to the theory or Infinitesimals Academic Press (1976). | MR | Zbl