@article{MZ_1992__209_2_174366,
     author = {Gerard van der Geer and M. van der Vlugt},
     title = {Trace and families of algebraic curves.},
     journal = {Mathematische Zeitschrift},
     pages = {307--316},
     publisher = {mathdoc},
     volume = {209},
     number = {2},
     year = {1992},
     zbl = {0767.94018},
     url = {http://geodesic.mathdoc.fr/item/MZ_1992__209_2_174366/}
}