Voir la notice de l'article provenant de la source Mathematicac Balkanica website
@article{MABA_2005_19_3-4_a1, author = {Afgan Aslanov}, title = {Existence of the {Minimum} and {Maximum} of {Two} {Self-Adjoint} {Operators}}, journal = {Mathematica balkanica}, pages = {255}, publisher = {mathdoc}, volume = {19}, number = {3-4}, year = {2005}, url = {http://geodesic.mathdoc.fr/item/MABA_2005_19_3-4_a1/} }
Afgan Aslanov. Existence of the Minimum and Maximum of Two Self-Adjoint Operators. Mathematica balkanica, Tome 19 (2005) no. 3-4, p. 255. http://geodesic.mathdoc.fr/item/MABA_2005_19_3-4_a1/