WASET
    Nelson F.F. Ebecken and  Gilberto C. Pereira,  Network Analysis in a Natural Perturbed Ecosystem.   journal   = {International Journal of Environmental and Ecological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2012, vol. 67(7). 411 - 414
    [viewed 20 April 2024]. Available from: https://publications.waset.org/pdf/14234.