@article{MZ_1981__177_173083,
     author = {Stephen B. Bank and Robert P. Kaufmann},
     title = {On {Briot-Bouquet} {Differential} {Equations} and a {Question} of {Einar} {Hille.}},
     journal = {Mathematische Zeitschrift},
     pages = {549--560},
     publisher = {mathdoc},
     volume = {177},
     year = {1981},
     zbl = {0478.34012},
     url = {http://geodesic.mathdoc.fr/item/MZ_1981__177_173083/}
}