Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MM2_1991__72_1_155647, author = {Karl Strambach and Martin Funk}, title = {On free constructions.}, journal = {Manuscripta mathematica}, pages = {335--374}, publisher = {mathdoc}, volume = {72}, number = {1}, year = {1991}, zbl = {0739.51005}, url = {http://geodesic.mathdoc.fr/item/MM2_1991__72_1_155647/} }
Karl Strambach; Martin Funk. On free constructions.. Manuscripta mathematica, Tome 72 (1991) no. 1, pp. 335-374. http://geodesic.mathdoc.fr/item/MM2_1991__72_1_155647/