A. N. Ivanov. Graphic Language for Describing Constraints on Diagrams of UML Classes. Programming and Computer Software, 30(4):204-208, 2004. [doi]
@article{Ivanov04-0, title = {Graphic Language for Describing Constraints on Diagrams of UML Classes}, author = {A. N. Ivanov}, year = {2004}, doi = {10.1023/B:PACS.0000036418.39776.5f}, url = {http://dx.doi.org/10.1023/B:PACS.0000036418.39776.5f}, tags = {constraints, UML}, researchr = {https://researchr.org/publication/Ivanov04-0}, cites = {0}, citedby = {0}, journal = {Programming and Computer Software}, volume = {30}, number = {4}, pages = {204-208}, }