A New Method of the Coupling Coordination Degree for Quantifying Sustainable Development from the Cosine of the High-Dimensional Spatial Angle Perspective. London Journal of Research In Science: Natural and Formal, [S. l.], v. 23, n. 15, p. 41–60, 2023. Disponível em: https://journalspress.uk/index.php/LJRS/article/view/515. Acesso em: 2 feb. 2026.