@article{107119, author = {Franti\v sek Neuman}, title = {Functions of the form $\sum\_{i=1} ^N f\_i(x) g\_i(t)$ in $L\_2$}, journal = {Archivum Mathematicum}, volume = {018}, year = {1982}, pages = {19-22}, zbl = {0506.41016}, mrnumber = {683342}, language = {en}, url = {http://dml.mathdoc.fr/item/107119} }
Neuman, František. Functions of the form $\sum_{i=1} ^N f_i(x) g_i(t)$ in $L_2$. Archivum Mathematicum, Tome 018 (1982) pp. 19-22. http://gdmltest.u-ga.fr/item/107119/
Factorizations of matrices and functions of two variables, to appear in Czechoslovak Math. J. | MR 0682133 | Zbl 0517.15012