@article{MZ_1919__3_167505,
     author = {M. Theis},
     title = {\"Uber eine {Interpolationsformel} von de la {Vall\'ee} {Poussin}},
     journal = {Mathematische Zeitschrift},
     pages = {93--113},
     year = {1919},
     volume = {3},
     zbl = {47.0248.01},
     url = {http://geodesic.mathdoc.fr/item/MZ_1919__3_167505/}
}