%0 Journal Article %A Johnson, Norman L. %T Twisted quadrics and $\alpha $-flocks %J Algebraic Combinatorics %D 2022 %P 803-826 %V 5 %N 5 %I The Combinatorics Consortium %U https://doi.org/10.5802/alco.216 %R 10.5802/alco.216 %G en %F ALCO_2022__5_5_803_0