“…For number fields, t-aspect subconvexity was achieved by Cogdell, Piatetski-Shapiro and Sarnak [5], Petridis and Sarnak [19] and Diaconu and Garrett [6]. The first subconvex bound in the M aspect (for t = 0) was obtained by Duke, Friedlander and Iwaniec [7] (for holomorphic forms of full level), Bykovskii [4] (for general holomorphic forms) and later by Harcos [9], Michel [15] and Blomer, Harcos and Michel [3] (for Maass forms). Over number fields this was established by Venkatesh [21] and Blomer and Harcos [2].…”