A quick search using ISI Web of Science gave us this list of referenced articles in which "Quarter Degree Grid" matches the content:

  • Branch, 1999 W.R. Branch, Reptile systematic studies in Southern Africa: a brief history and overview, Trans. R. Soc. S. Afr. 54 (1999), pp. 137–156.

  • Githaiga-Mwicigi?, J.M.W., Fairbanks, D.H.K. & Midgley, G. (2002) Hierarchical processes define spatial pattern of avian assemblages restricted and endemic to the arid Karoo, South Africa. Journal of Biogeography, 29, 1067–1087.

  • Hamer, M.L., Slotow, R.H. (2002) "Conservation application of existing data for South African millipedes (Diplopoda)" African Entomol. 10: 29-42

  • Hull et al., 1998 H.E. Hull, S. Freitag, S.L. Chown and C.L. Bellamy, Identification and evaluation of priority conservation areas for Buprestidae (Coleoptera) in South Africa, Lesotho, Swaziland and Namibia, African Entomology 6 (1998), pp. 265–274.

  • Moline, P.M. & Linder, H.P. (2006) Input data, analytical methods and biogeography of Elegia (Restionaceae). Journal of Biogeography, 33, 47–62.