A. Mohammadi, T. Pham, and Y. Wang, “An energy decomposition theorem for matrices and related questions,” Canadian Mathematical Bulletin, vol. 66, no. 4. Cambridge University Press, pp. 1280–1295, 2023.

G. Ivanov, “Tight frames and related geometric problems,” Canadian Mathematical Bulletin, vol. 64, no. 4. Canadian Mathematical Society, pp. 942–963, 2021.