@article{GDZPPN002042495, title = {On a superadditivity property of Gram's determinant.}, journal = {Aequationes mathematicae}, volume = {53}, year = {1997}, pages = {199-204}, zbl = {0890.26015}, url = {http://dml.mathdoc.fr/item/GDZPPN002042495} }
Páles, Z.; Dragomir, S.S.; Mond, B. On a superadditivity property of Gram's determinant.. Aequationes mathematicae, Tome 53 (1997) pp. 199-204. http://gdmltest.u-ga.fr/item/GDZPPN002042495/