R. Allen Bruce, Paul K. Giloth, Eugene H. Siegel Jr.. No. 4 ESS-Evolution of a Digital Switching System. IEEE Transactions on Communications, 27(7):1001-1011, 1979. [doi]
@article{BruceGS79,
title = {No. 4 ESS-Evolution of a Digital Switching System},
author = {R. Allen Bruce and Paul K. Giloth and Eugene H. Siegel Jr.},
year = {1979},
doi = {10.1109/TCOM.1979.1094515},
url = {https://doi.org/10.1109/TCOM.1979.1094515},
researchr = {https://researchr.org/publication/BruceGS79},
cites = {0},
citedby = {0},
journal = {IEEE Transactions on Communications},
volume = {27},
number = {7},
pages = {1001-1011},
}