@article{10_1007_s10587_014_0141_6,
     author = {Bu, Changjiang and Wang, Wenzhe and Zhou, Jiang and Sun, Lizhu},
     title = {On block triangular matrices with signed {Drazin} inverse},
     journal = {Czechoslovak Mathematical Journal},
     pages = {883--892},
     publisher = {mathdoc},
     volume = {64},
     number = {4},
     year = {2014},
     doi = {10.1007/s10587-014-0141-6},
     mrnumber = {3304786},
     zbl = {06433702},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.1007/s10587-014-0141-6/}
}