S. El-Kassas. Visual languages their definition and applications in system development. Journal of Systems Architecture, 32(1-5):383-391, 1991. [doi]
@article{El-Kassas91,
title = {Visual languages their definition and applications in system development},
author = {S. El-Kassas},
year = {1991},
doi = {10.1016/0165-6074(91)90375-4},
url = {https://doi.org/10.1016/0165-6074(91)90375-4},
researchr = {https://researchr.org/publication/El-Kassas91},
cites = {0},
citedby = {0},
journal = {Journal of Systems Architecture},
volume = {32},
number = {1-5},
pages = {383-391},
}