Joost Engelfriet. Simple Program Schemes and Formal Languages. Volume 20 of Lecture Notes in Computer Science, Springer, 1974.
@book{Engelfriet74, title = {Simple Program Schemes and Formal Languages}, author = {Joost Engelfriet}, year = {1974}, tags = {programming languages}, researchr = {https://researchr.org/publication/Engelfriet74}, cites = {0}, citedby = {0}, volume = {20}, series = {Lecture Notes in Computer Science}, publisher = {Springer}, isbn = {3-540-06953-4}, }