WILLINK, Edward. Modeling the OCL Standard Library. Electronic Communications of the EASST, [S. l.], v. 44, 2011. DOI: 10.14279/tuj.eceasst.44.663. Disponível em: https://www.eceasst.org/index.php/eceasst/article/view/1851. Acesso em: 23 jul. 2025.