Gem Stapleton, John Taylor, Simon Thompson, John Howse. The expressiveness of spider diagrams augmented with constants. Journal of Computer Languages, 20(1):30-49, 2009. [doi]
@article{StapletonTTH09,
title = {The expressiveness of spider diagrams augmented with constants},
author = {Gem Stapleton and John Taylor and Simon Thompson and John Howse},
year = {2009},
doi = {10.1016/j.jvlc.2008.01.005},
url = {http://dx.doi.org/10.1016/j.jvlc.2008.01.005},
researchr = {https://researchr.org/publication/StapletonTTH09},
cites = {0},
citedby = {0},
journal = {Journal of Computer Languages},
volume = {20},
number = {1},
pages = {30-49},
}