Peter Lucas. Formal Definition of Programming Languages and Systems. In IFIP Congress (1). pages 291-297, 1971.
@inproceedings{Lucas71, title = {Formal Definition of Programming Languages and Systems}, author = {Peter Lucas}, year = {1971}, tags = {programming languages, programming}, researchr = {https://researchr.org/publication/Lucas71}, cites = {0}, citedby = {0}, pages = {291-297}, booktitle = {IFIP Congress (1)}, }