@article{MAN_1886__26_157178,
     author = {Pringsheim},
     title = {Ueber die {Multiplication} trigonometrischer {Reihen}},
     journal = {Mathematische Annalen},
     pages = {157--166},
     publisher = {mathdoc},
     volume = {26},
     year = {1886},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MAN_1886__26_157178/}
}