@article{10_1007_s10587_016_0266_x,
     author = {Hu, Xiaohan and Zeng, Jiwen},
     title = {Principal blocks and $p$-radical groups},
     journal = {Czechoslovak Mathematical Journal},
     pages = {431--444},
     publisher = {mathdoc},
     volume = {66},
     number = {2},
     year = {2016},
     doi = {10.1007/s10587-016-0266-x},
     mrnumber = {3519612},
     zbl = {06604477},
     language = {en},
     url = {https://geodesic-test.mathdoc.fr/articles/10.1007/s10587-016-0266-x/}
}