@article{MAN_1977__227_162977,
     author = {Serge Lang and Daniel S. Kubert},
     title = {Units in the {Modular} {Function} {Field.} {IV.} {The} {Siegel} {Functions} are {Generators.}},
     journal = {Mathematische Annalen},
     pages = {223--242},
     publisher = {mathdoc},
     volume = {227},
     year = {1977},
     zbl = {0331.10012},
     url = {http://geodesic.mathdoc.fr/item/MAN_1977__227_162977/}
}