@article{10_4064_aa107_1_7,
     author = {Hwanyup Jung and Jaehyun Ahn},
     title = {On the relative class number of
 cyclotomic function fields},
     journal = {Acta Arithmetica},
     pages = {91--101},
     publisher = {mathdoc},
     volume = {107},
     number = {1},
     year = {2003},
     doi = {10.4064/aa107-1-7},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa107-1-7/}
}