@article{MZ_1921__10_167642,
     author = {M., Lagally},
     title = {\"Uber ein {Verfahren} zur {Transformation} ebener {Wirbelprobleme}},
     journal = {Mathematische Zeitschrift},
     pages = {231--239},
     publisher = {mathdoc},
     volume = {10},
     year = {1921},
     zbl = {48.0949.04},
     url = {http://geodesic.mathdoc.fr/item/MZ_1921__10_167642/}
}