Mihai Rebenciuc and Simona Mihaela Bibic, Generalized Rough Sets Applied to Graphs Related to Urban Problems. journal = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology. August 2017, vol. 129(9). 411 - 416 [viewed 23 September 2024]. Available from: https://publications.waset.org/pdf/10007960.