@article{GDZPPN00206555X, title = {Reduction theory using semistability.}, journal = {Commentarii mathematici Helvetici}, volume = {59}, year = {1984}, pages = {600-634}, zbl = {0564.20027}, url = {http://dml.mathdoc.fr/item/GDZPPN00206555X} }
Grayson, Daniel R. Reduction theory using semistability.. Commentarii mathematici Helvetici, Tome 59 (1984) pp. 600-634. http://gdmltest.u-ga.fr/item/GDZPPN00206555X/