Herman K. Gummel, H. C. Poon. An integral charge control model of bipolar transistors. Bell Syst. Tech. J., 49(5):827-852, 1970. [doi]
@article{GummelP70,
title = {An integral charge control model of bipolar transistors},
author = {Herman K. Gummel and H. C. Poon},
year = {1970},
doi = {10.1002/j.1538-7305.1970.tb01803.x},
url = {https://doi.org/10.1002/j.1538-7305.1970.tb01803.x},
researchr = {https://researchr.org/publication/GummelP70},
cites = {0},
citedby = {0},
journal = {Bell Syst. Tech. J.},
volume = {49},
number = {5},
pages = {827-852},
}