Comment on the paper ``Bound States in the One-dimensional Hubbard Model''
(1998)
Incommensurate spin correlations in Heisenberg spin-1/2 zig-zag ladders
(1998)
Dynamical magnetic susceptibilities in copper benzoate
PHYSICAL REVIEW B 57:17 (1998) 10592-10597
Incommensurate spin correlations in spin-1/2 frustrated two-leg Heisenberg ladders
PHYSICAL REVIEW LETTERS 81:4 (1998) 910-913