André Arnold, Maurice Nivat. Formal Computations of Non Deterministic Recursive Program Schemes. Theory Comput. Syst., 13:219-236, 1980.
@article{ArnoldN80, title = {Formal Computations of Non Deterministic Recursive Program Schemes}, author = {André Arnold and Maurice Nivat}, year = {1980}, researchr = {https://researchr.org/publication/ArnoldN80}, cites = {0}, citedby = {0}, journal = {Theory Comput. Syst.}, volume = {13}, pages = {219-236}, }