Köksal, O.K., et al. “Application of X-Rays to Interpret Intensity Ratios for Nickel in Nickel (II) Oxide ”. Acta Physica Polonica A ISSN 1898-794X , vol. 143, no. 5, June 2023, p. 362, https://doi.org/10.12693/APhysPolA.143.362.