Comparison of our calculations with the ELMAG code and the result of Vovk et al. (2012) for z = 0.14. Magenta line denotes the total observable spectrum calculated by Vovk et al. (2012) and other lines denote our results: dashed black line – primary spectrum in the source, solid black line – absorbed primary component, solid green line – cascade component, dashed thick blue line – total model spectrum.