To cite nodiv in a publication:

Borregaard M, Rahbek C, Fjeldsaa J, Parra J, Whittaker R, Graham C (2014). “Node-based analysis of species distributions.” Methods in Ecology and Evolution, 5(11), 1225-1235. doi:10.1111/2041-210X.12283.

Corresponding BibTeX entry:

    title = {Node-based analysis of species distributions},
    author = {M.K. Borregaard and C. Rahbek and J. Fjeldsaa and J.L.
      Parra and R.J. Whittaker and C.H. Graham},
    journal = {Methods in Ecology and Evolution},
    volume = {5(11)},
    pages = {1225-1235},
    year = {2014},
    doi = {10.1111/2041-210X.12283},