Erratum to: Complex Adapt Syst Model (2016) 4:18 DOI 10.1186/s40294-016-0030-y

In published version of the article (Shah et al. 2016), Figure 9 caption shows a wrong citation such as “Figure 9. Classification of CR MAC protocols (Shah, M.A. Si**g Zhang 2013).” The figure is adopted from Joshi et al. (2009). Hence, the corrected caption of Fig. 9 is given in this erratum.

Fig. 9
figure 9

(Joshi et al. 2009)

Classification of CR MAC protocols