Wilkinson, Michael
(2001).
Energy-shell bases.Journal of Physics A: Mathematical and General, 34(49)
pp. 11149–11156.
2000
Guan, Xi-Wen; Grimm, Uwe; Roemer, Rudolf A. and Schreiber, Michael
(2000).
Integrable impurities for an open fermion chain.Journal of Physics A: Mathematical and General, 33(21)
pp. 3863–3879.