"K. Matsui,M. Fujisawa,HIDEKAZU TANAKA,R. Scheuermann,T. Goto","High-field 1H-NMR study around a 1/4 plateau of quantum spin dimer system NH4CuCl3",,"J. Phys: Conf. Ser.",,"Vol. 828",,"  012011 (1-6)",2017,Apr.