TY - JOUR AU - Valentin Blomer TI - On the 4-norm of an automorphic form JO - Journal of the European Mathematical Society PY - 2013 SP - 1825 EP - 1852 VL - 15 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4171/jems/405/ DO - 10.4171/jems/405 ID - JEMS_2013_15_5_a7 ER -