@article{10_4064_aa151_2_3,
     author = {Nicol\'as Caro and Arnaldo Garcia},
     title = {On a tower of {Ihara} and its limit},
     journal = {Acta Arithmetica},
     pages = {191--200},
     publisher = {mathdoc},
     volume = {151},
     number = {2},
     year = {2012},
     doi = {10.4064/aa151-2-3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa151-2-3/}
}