@article{CSIS_2012_9_1_a18,
     author = {Fernando Valles-Barajas},
     title = {Using {Lightweight} {Formal} {Methods} to {Model} {Class} and {Object} {Diagrams}},
     journal = {Computer Science and Information Systems},
     publisher = {mathdoc},
     volume = {9},
     number = {1},
     year = {2012},
     url = {http://geodesic.mathdoc.fr/item/CSIS_2012_9_1_a18/}
}