No assembly required: Mergers are mostly irrelevant for the growth of low-mass dwarf galaxies

Alex Fitts, Michael Boylan-Kolchin, James S. Bullock, Daniel R. Weisz, Kareem El-Badry, Coral Wheeler, Claude André Faucher-Giguère, Eliot Quataert, Philip F. Hopkins, Dušan Kereš, Andrew Wetzel, Christopher C. Hayward