Some remarks on the paper “Influence of zinc concentration on band gap and sub-band gap absorption on ZnO nanocrystalline thin films sol-gel grown” by Munirah, Ziaul Raza Khan, Anver Aziz, Mohd. Shahid Khan, M.U. Khandaker [Mater. Sci-Poland, 35 (1) 2017, 246 – 253]