Pawel Urzyczyn. Nontrivial Definability by Flow-Chart Programs. Inf. Comput., 58(1-3):59-87, July/August/September 1983.
@article{Urzyczyn83b, title = {Nontrivial Definability by Flow-Chart Programs}, author = {Pawel Urzyczyn}, year = {1983}, month = {July/August/September}, tags = {data-flow programming, data-flow}, researchr = {https://researchr.org/publication/Urzyczyn83b}, cites = {0}, citedby = {0}, journal = {Inf. Comput.}, volume = {58}, number = {1-3}, pages = {59-87}, }