Richard M. Salter, Terence J. Brennan, Daniel P. Friedman. Concur: A Language for Continuous, Concurrent Processes. Computer Languages, Systems \& Structures, 5(3):163-189, 1980.
@article{SalterBF80, title = {Concur: A Language for Continuous, Concurrent Processes}, author = {Richard M. Salter and Terence J. Brennan and Daniel P. Friedman}, year = {1980}, researchr = {https://researchr.org/publication/SalterBF80}, cites = {0}, citedby = {0}, journal = {Computer Languages, Systems \& Structures}, volume = {5}, number = {3}, pages = {163-189}, }