@article{Vinh09-4,
  title = {r are non-Ramanujan},
  author = {Le Anh Vinh},
  year = {2009},
  url = {http://ajc.maths.uq.edu.au/pdf/43/ajc_v43_p295.pdf},
  researchr = {https://researchr.org/publication/Vinh09-4},
  cites = {0},
  citedby = {0},
  journal = {Australasian J. Combinatorics},
  volume = {43},
  pages = {295-306},
}