@article{1206133986, author = {Shimomura, Katsumi}, title = {Novikov's ${\rm Ext}\sp2$ at the prime 2}, journal = {Hiroshima Math. J.}, volume = {11}, number = {2}, year = {1981}, pages = { 499-513}, language = {en}, url = {http://dml.mathdoc.fr/item/1206133986} }
Shimomura, Katsumi. Novikov's ${\rm Ext}\sp2$ at the prime 2. Hiroshima Math. J., Tome 11 (1981) no. 2, pp. 499-513. http://gdmltest.u-ga.fr/item/1206133986/