“…Shahidi et al some peaks at 840, 890, 960, 1180Shahidi et al some peaks at 840, 890, 960, , 1370Shahidi et al some peaks at 840, 890, 960, , 1450, and 2900 cm À1 , which are well matched to those reported in the handbook (Payamara, Shahidi, Ghoranneviss, Wiener, & Anvari, 2010;Pouchert, 1985). But upon laser treatment, extra peaks appear.…”