@article{ELA_2002__9__a4,
     author = {Peretz, Ronen},
     title = {Iterations of concave maps, the {Perron-Frobenius} theory, and applications to circle packings},
     journal = {The electronic journal of linear algebra},
     pages = {197--254},
     publisher = {mathdoc},
     volume = {9},
     year = {2002},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ELA_2002__9__a4/}
}