%0 Journal Article %T On the error term in Weyl's law for the Heisenberg manifolds (II) %A Wenguang Zhai %J Mathematics %D 2011 %I arXiv %R 10.1007/s11425-008-0167-z %X In this paper we study the mean square of the error term in the Weyl's law of an irrational $(2l+1)$-dimensional Heisenberg manifold . An asymptotic formula is established. %U http://arxiv.org/abs/1111.4796v1