Yosifa, A., D. Novianti, N. Auliyah, S. Al Maula, D. -, M. F. Mardianto, and E. Ana. “Classification of Cities in Europe Based on Smart City Indicators Using Multidimensional Scaling Analysis”. International Journal Of Mathematics And Computer Research, Vol. 11, no. 2, Feb. 2023, pp. 3243-7, doi:10.47191/ijmcr/v11i2.03.