The crossing number of folded hypercubes
  The {\it crossing number} of a graph $G$ is the minimum number of pairwise intersections of edges in a drawing of $G$. The {\it $n$-dimensional folded hypercube} $FQ_n$ is a graph obtained from $n$-dimensional hypercube by adding all complementary edges. In this paper, we obtain upper and lower bounds of the crossing number of $FQ_n$. 
Haoli Wang, Yuansheng Yang, Yan Zhou, Wenping Zheng, Guoqing Wang
math.CO