@article{MABA_1999_13_1-2_a3,
     author = {P. G. Todorov},
     title = {Matrix {Theorems} for the {Branges} {Weight} {Functions}},
     journal = {Mathematica balkanica},
     pages = {21},
     publisher = {mathdoc},
     volume = {13},
     number = {1-2},
     year = {1999},
     url = {http://geodesic.mathdoc.fr/item/MABA_1999_13_1-2_a3/}
}