Ekström, Fredrik, Esa Järvenpää, and Maarit Järvenpää. “Hausdorff Dimension of Limsup Sets of Rectangles in the Heisenberg Group”. Mathematica Scandinavica 126, no. 2 (May 6, 2020): 229–255. Accessed July 24, 2026. https://journals.msp.org/mscand/article/view/191.