@article{JRAM_1924__153_149532,
     author = {G. Wiarda},
     title = {Beitr\"age zur {Theorie} der {Laguerrschen} {Polynome} und zum {Summationsproblem} von {Orthogonalsystemen.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {44--60},
     publisher = {mathdoc},
     volume = {153},
     year = {1924},
     zbl = {49.0259.02},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1924__153_149532/}
}