@article{PM_1992_1992_1_a12,
     author = {Swartz, Charles},
     title = {Series iteradas y el teorema de {Hellinger-Toeplitz.}},
     journal = {Publicacions matem\`atiques},
     pages = {167-173},
     publisher = {mathdoc},
     volume = {36},
     number = {1},
     year = {1992},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PM_1992_1992_1_a12/}
}