@article{10_1090_S0894_0347_1991_1076089_9,
     author = {Schramm, Oded},
     title = {Rigidity of infinite (circle) packings},
     journal = {Journal of the American Mathematical Society},
     pages = {127--149},
     publisher = {mathdoc},
     volume = {04},
     number = {1},
     year = {1991},
     doi = {10.1090/S0894-0347-1991-1076089-9},
     url = {http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-1991-1076089-9/}
}