(color online) (a) Thermal conductivity of graphene as a function of temperature shown for different graphene flake widths. The results were calculated for the specularity parameter p = 0.9. An experimental data point (purple dot) from Refs. [51] and [54] is also shown for comparison. (b) Thermal conductivity of graphene as a function of the density of defects induced by electron beam irradiation. The experimental results are shown by circle points. The solid curves correspond to the BTE results, plotted for different values of specularity parameter p. Adopted with permission from Ref. [63] (copyright 2009 American Physical Society) and from Ref. [80] (copyright 2016 The Royal Society of Chemistry).