"K. Goto,T. Osakabe,K. Kakurai,Y. Uwatoko,A. Oosawa,J. Kawakami,H. Tanaka","Softening of Magnetic Excitations Leading to Pressure-Induced Quantum Phase Transition in Gapped Spin System KCuCl3",,"J. Phys. Soc. Jpn.",,"Vol. 76",,"pp. 053704 (1-4)",2007, "Masaaki Matsuda,K. Kakurai,A.A. Belik,M. Azuma,M. Takano,M. Fujita","Magnetic Excitations from the Linear Heisenberg Antiferromagnetic Spin Trimer System A3Cu3(PO4)4 (A=Ca, Sr, and Pb)",,"Phys. Rev. B",,"Vol. 71","No. 14","pp. 144411-1-144411-5",2005,