Robert J. Dick, Toby Berger. Capacity and a lower bound to $R_{mbox{co\mp}}$ for a channel with symbol fission. IEEE Transactions on Information Theory, 22(4):399-410, 1976. [doi]
@article{DickB76,
title = {Capacity and a lower bound to $R_{mbox{co\mp}}$ for a channel with symbol fission},
author = {Robert J. Dick and Toby Berger},
year = {1976},
doi = {10.1109/TIT.1976.1055575},
url = {http://doi.ieeecomputersociety.org/10.1109/TIT.1976.1055575},
researchr = {https://researchr.org/publication/DickB76},
cites = {0},
citedby = {0},
journal = {IEEE Transactions on Information Theory},
volume = {22},
number = {4},
pages = {399-410},
}