An original paper entitled “Effect of the glucono-δ-lactone concentration on the sensitivity and stability of PVA-GTA-I radiochromic gel dosimeter” by Jolan et al. has been published on the Radiation Measurements journal (published by Elsevier Ltd.). They clarified that the sensitivity of the PVA-GTA-I gel increased with concentration of glucono-δ-lactone (GDL).