Reference (bibtex)

@article {IoShVe2001,
    AUTHOR = {Ioffe, D. and Shlosman, S. and Velenik, Y.},
     TITLE = {2D Models of Statistical Physics with Continuous Symmetry:
              The Case of Singular Interactions},
   JOURNAL = {Comm. Math. Phys.},
  FJOURNAL = {Communications in Mathematical Physics},
    VOLUME = {226},
      YEAR = {2002},
    NUMBER = {2},
     PAGES = {433--454}
}