%0 Journal Article %A Dudas, Olivier %A Norton, Emily %T Decomposition numbers for the principal $\Phi _{2n}$-block of $\mathrm{Sp}_{4n}(q)$ and $\mathrm{SO}_{4n+1}(q)$ %J Annales de l'Institut Fourier %D 2025 %P 579-622 %V 75 %N 2 %I Association des Annales de l’institut Fourier %U https://aif.centre-mersenne.org/articles/10.5802/aif.3659/ %R 10.5802/aif.3659 %G en %F AIF_2025__75_2_579_0