Cossidente, Antonio, and Francesco Pavese. “Maximal Partial Spreads of Polar Spaces”. The Electronic Journal of Combinatorics 24, no. 2 (April 13, 2017): #P2.12. Accessed May 2, 2026. https://www.combinatorics.org/ojs/index.php/eljc/article/view/v24i2p12.