Technical Note - The Optimal Estimation of the Expected Number in a M/D/∞ Queueing System

@article{Grassmann1981TechnicalN,
  title={Technical Note - The Optimal Estimation of the Expected Number in a M/D/∞ Queueing System},
  author={Winfried K. Grassmann},
  journal={Operations Research},
  year={1981},
  volume={29},
  pages={1208-1211}
}