S. Smith. A generalization of Huffman coding for messages with frequencies given by upper and lower bounds (Corresp.). IEEE Transactions on Information Theory, 20(1):124-125, 1974. [doi]
@article{Smith74-1,
title = {A generalization of Huffman coding for messages with frequencies given by upper and lower bounds (Corresp.)},
author = {S. Smith},
year = {1974},
doi = {10.1109/TIT.1974.1055147},
url = {http://dx.doi.org/10.1109/TIT.1974.1055147},
researchr = {https://researchr.org/publication/Smith74-1},
cites = {0},
citedby = {0},
journal = {IEEE Transactions on Information Theory},
volume = {20},
number = {1},
pages = {124-125},
}