@article{GDZPPN002210134,
title = {Moduli of stable sheaves on ruled surfaces and their Picard groups.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {426},
year = {1992},
pages = {201-219},
zbl = {0753.14031},
url = {http://dml.mathdoc.fr/item/GDZPPN002210134}
}
Qin, Zhenbo. Moduli of stable sheaves on ruled surfaces and their Picard groups.. Journal für die reine und angewandte Mathematik, Tome 426 (1992) pp. 201-219. http://gdmltest.u-ga.fr/item/GDZPPN002210134/