Monte Carlo test of the Goldstone mode singularity in 3D XY model J. Kaupužs, R. V.N. Melnik and J. Rimshans Eur. Phys. J. B, 55 4 (2007) 363-370 Published online: 07 March 2007 DOI: 10.1140/epjb/e2007-00064-0