@article{CTGDC_1981__22_4_399_0, author = {Porst, Hans-Eberhard}, title = {Characterization of injective envelopes}, journal = {Cahiers de Topologie et G\'eom\'etrie Diff\'erentielle Cat\'egoriques}, volume = {22}, year = {1981}, pages = {399-406}, mrnumber = {639050}, zbl = {0473.18010}, language = {en}, url = {http://dml.mathdoc.fr/item/CTGDC_1981__22_4_399_0} }
Porst, Hans-E. Characterization of injective envelopes. Cahiers de Topologie et Géométrie Différentielle Catégoriques, Tome 22 (1981) pp. 399-406. http://gdmltest.u-ga.fr/item/CTGDC_1981__22_4_399_0/
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