David F. Martin, Gerald Estrin. Models of Computational Systems-Cyclic to Acyclic Graph Transformations. IEEE Transactions on Computers, 16(1):70-79, 1967. [doi]
@article{MartinE67a,
title = {Models of Computational Systems-Cyclic to Acyclic Graph Transformations},
author = {David F. Martin and Gerald Estrin},
year = {1967},
doi = {10.1109/PGEC.1967.264607},
url = {http://dx.doi.org/10.1109/PGEC.1967.264607},
researchr = {https://researchr.org/publication/MartinE67a},
cites = {0},
citedby = {0},
journal = {IEEE Transactions on Computers},
volume = {16},
number = {1},
pages = {70-79},
}