@article{MZ_1963__82_170186,
     author = {Harry Hochstadt},
     title = {Functiontheoretic properties of the discriminant of {Hill'} s equation.},
     journal = {Mathematische Zeitschrift},
     pages = {237--242},
     year = {1963},
     volume = {82},
     url = {http://geodesic.mathdoc.fr/item/MZ_1963__82_170186/}
}