@article{RM_1987_42_6_a9,
     author = {A. D. Berenshtein and A. D. Vainshtein},
     title = {A~multiplicative analogue of {Bergstr\"om's} inequality for the {Hadamard} matrix product},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {225--226},
     publisher = {mathdoc},
     volume = {42},
     number = {6},
     year = {1987},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1987_42_6_a9/}
}