@article{PORMA_2005__62_2_52665,
     author = {Beelen, Peter and Garcia, Arnaldo and Stichtenoth, Henning},
     title = {On ramification and genus of recursive towers.},
     journal = {Portugaliae mathematica},
     pages = {231--243},
     publisher = {mathdoc},
     volume = {62},
     number = {2},
     year = {2005},
     zbl = {1096.11021},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PORMA_2005__62_2_52665/}
}