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@article{MS2_1983__53_166865, author = {Thomas Weibull}, title = {A natural map from the ext {K\"unneth} sequence to the {Tor} one.}, journal = {Mathematica Scandinavica}, pages = {203--206}, publisher = {mathdoc}, volume = {53}, year = {1983}, zbl = {0547.18005}, url = {http://geodesic.mathdoc.fr/item/MS2_1983__53_166865/} }
Thomas Weibull. A natural map from the ext Künneth sequence to the Tor one.. Mathematica Scandinavica, Tome 53 (1983), pp. 203-206. http://geodesic.mathdoc.fr/item/MS2_1983__53_166865/