@article{GDZPPN002439115, title = {Extensions between simple modules for Frobenius kernels.}, journal = {Mathematische Zeitschrift}, volume = {207}, year = {1991}, pages = {485-500}, zbl = {0810.20035}, url = {http://dml.mathdoc.fr/item/GDZPPN002439115} }
Lin, Zongzhu. Extensions between simple modules for Frobenius kernels.. Mathematische Zeitschrift, Tome 207 (1991) pp. 485-500. http://gdmltest.u-ga.fr/item/GDZPPN002439115/