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@article{AM2_1968__1_135982, author = {Paul Tur\'an}, title = {On a {Certain} {Limitation} fo {Eigenvalues} of {Matrices.} {(Short} {Communication).}}, journal = {Aequationes mathematicae}, pages = {307--308}, publisher = {mathdoc}, volume = {1}, year = {1968}, url = {http://geodesic.mathdoc.fr/item/AM2_1968__1_135982/} }
Paul Turán. On a Certain Limitation fo Eigenvalues of Matrices. (Short Communication).. Aequationes mathematicae, Tome 1 (1968), pp. 307-308. http://geodesic.mathdoc.fr/item/AM2_1968__1_135982/