Chawin, Dror, and Ishay Haviv. “On the Subspace Choosability in Graphs”. The Electronic Journal of Combinatorics 29, no. 2 (May 6, 2022): P2.20. Accessed April 4, 2026. https://www.combinatorics.org/ojs/index.php/eljc/article/view/v29i2p20.