@article{
  author = {Hakimi-Nezhaad, M., Ghorbani, M.},
  title = {Normalized laplacian spectrum of two new types of join graphs},
  journal = {Journal of Linear and Topological Algebra},
  year = {2017},
  volume = {6},
  number = {1},
  pages = {1-9},
  doi = {}
}