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Integrály pohybu pro kvantové spinové řetězy s interakcí danou Weierstrassovou eliptickou funkcí
Dittrich, Jaroslav ; Inozemtsev, V. I.
Two non-trivial integrals of motion are constructed for the spin chains with exchange interaction the coupling strengh being given by the Weierstrass elliptic function of the spins distance.

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