Comment on cond-mat/0406502 by V. Yukalov and E. Yukalova on Coherent   Nuclear Radiation
  We show that the argument of Yukalov and Yukalova that dipole-dipole interaction prevents a system of magnetic dipoles from exhibiting superradiance unless assisted by a resonator is incorrect. 
E. M. Chudnovsky and D. A. Garanin