TY - JOUR AU - K. L. Malyshev TI - Functional Integration with an ``Automorphic'' Boundary Condition and Correlators of Third Components of Spins in the $XX$ Heisenberg Model JO - Teoretičeskaâ i matematičeskaâ fizika PY - 2003 SP - 285 EP - 298 VL - 136 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TMF_2003_136_2_a7/ LA - ru ID - TMF_2003_136_2_a7 ER -