Below is the ascii version of the abstract for 14-25. The html version should be ready soon.

Z.Muminov, Sh.Kholmatov
The HVZ theorem for $N$-particle Schr\"odinger operators on lattice
(337K, PDF)

ABSTRACT.   The $N$-particle Schr\"odinger operator $H(K),$ $K\in 
(-\pi,\pi]^d,$ $K$ being the total quasi-momentum, with short-range 
pair potentials on lattice $\Z^d,$ $d\ge1,$ is considered. For fixed 
total quasi-momentum $K$, the structure of $H(K)$'s 
essential spectrum is described and the analogue of the Hunziker -- 
van Winter -- Zhislin (HVZ) theorem is proved.