Ching Lai Sheng, H. R. Hwa. Testing and Realization of Threshold Functions with Don't Cares. IEEE Transactions on Computers, 16(6):868-870, 1967. [doi]
@article{ShengH67,
title = {Testing and Realization of Threshold Functions with Don't Cares},
author = {Ching Lai Sheng and H. R. Hwa},
year = {1967},
doi = {10.1109/PGEC.1967.264754},
url = {http://dx.doi.org/10.1109/PGEC.1967.264754},
researchr = {https://researchr.org/publication/ShengH67},
cites = {0},
citedby = {0},
journal = {IEEE Transactions on Computers},
volume = {16},
number = {6},
pages = {868-870},
}