@article{102499, author = {Ulrich F. Albrecht}, title = {Extension functors on the category of $A$-solvable abelian groups}, journal = {Czechoslovak Mathematical Journal}, volume = {41}, year = {1991}, pages = {685-694}, zbl = {0776.20018}, mrnumber = {1134957}, language = {en}, url = {http://dml.mathdoc.fr/item/102499} }
Albrecht, Ulrich F. Extension functors on the category of $A$-solvable abelian groups. Czechoslovak Mathematical Journal, Tome 41 (1991) pp. 685-694. http://gdmltest.u-ga.fr/item/102499/
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