Linda A. Macaulay, Chris J. H. Fowler, Mark A. R. Kirby, Andrew Hutt. USTM: A New Approach to Requirements Specification. Interacting with Computers, 2(1):92-118, 1990.
@article{MacaulayFKH90, title = {USTM: A New Approach to Requirements Specification}, author = {Linda A. Macaulay and Chris J. H. Fowler and Mark A. R. Kirby and Andrew Hutt}, year = {1990}, tags = {systematic-approach}, researchr = {https://researchr.org/publication/MacaulayFKH90}, cites = {0}, citedby = {0}, journal = {Interacting with Computers}, volume = {2}, number = {1}, pages = {92-118}, }