Hans S. Witsenhausen. Some aspects of convexity useful in information theory. IEEE Transactions on Information Theory, 26(3):265-271, 1980. [doi]
@article{Witsenhausen80-0,
title = {Some aspects of convexity useful in information theory},
author = {Hans S. Witsenhausen},
year = {1980},
doi = {10.1109/TIT.1980.1056173},
url = {http://doi.ieeecomputersociety.org/10.1109/TIT.1980.1056173},
researchr = {https://researchr.org/publication/Witsenhausen80-0},
cites = {0},
citedby = {0},
journal = {IEEE Transactions on Information Theory},
volume = {26},
number = {3},
pages = {265-271},
}