• Magnetic Studies of En...
• Excitation Spectrum Ga...
• Doping dependence of t...
• Scaling behavior of th...
• On the estimate of the...
• Spin Chains in an Exte...
• Spin-Gap States of a P...
• Spin Gap of S=12 Heise...
• Persistent spin curren...
• Coexistence of Haldane...