A lower bound for the error term in Weyl's law for certain Heisenberg   manifolds, II
  This article is concerned with estimations from below for the remainder term in Weyl's law for the spectral counting function of certain rational (2l+1)-dimensional Heisenberg manifolds. Concentrating on the case of odd l, it continues the work done in part I which dealt with even l. 
W. G. Nowak