TY - JOUR AU - Anne-Maria Ernvall-Hytönen TI - Mean square estimate for relatively short exponential sums involving Fourier coefficients of cusp forms JO - Annales Fennici Mathematici PY - 2015 SP - 385 EP - 395 VL - 40 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.5186/aasfm.2015.4019/ DO - 10.5186/aasfm.2015.4019 LA - en ID - AFM_2015_40_1_a21 ER -