@article{GDZPPN002440113, title = {Simple sheaves versus stable sheaves on algebraic surfaces.}, journal = {Mathematische Zeitschrift}, volume = {209}, year = {1992}, pages = {559-580}, zbl = {0735.14014}, url = {http://dml.mathdoc.fr/item/GDZPPN002440113} }
Qin, Zhenbo. Simple sheaves versus stable sheaves on algebraic surfaces.. Mathematische Zeitschrift, Tome 209 (1992) pp. 559-580. http://gdmltest.u-ga.fr/item/GDZPPN002440113/