TY - JOUR AU - Brady, Noel AU - Bridson, Martin R AU - Forester, Max AU - Shankar, Krishnan TI - Snowflake groups, Perron–Frobenius eigenvalues and isoperimetric spectra JO - Geometry & topology PY - 2009 SP - 141 EP - 187 VL - 13 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.2140/gt.2009.13.141/ DO - 10.2140/gt.2009.13.141 ID - GT_2009_13_1_a4 ER -