@article{GDZPPN002427346, title = {The Balance of Tor.}, journal = {Mathematische Zeitschrift}, volume = {183}, year = {1983}, pages = {179-188}, zbl = {0488.20042}, url = {http://dml.mathdoc.fr/item/GDZPPN002427346} }
Hill, Paul. The Balance of Tor.. Mathematische Zeitschrift, Tome 183 (1983) pp. 179-188. http://gdmltest.u-ga.fr/item/GDZPPN002427346/