The suggested study was reviewed and included to the reference list. It helped us to explain the results of our study (e.g. prediction of Fe and Cd using basic soil properties, clay mineralogy and (soil type) and micro-nutrients).
In addition, it needs support with more and more up-to-date recent articles. I suggest the following: Soil parameters affecting the levels of potentially harmful metals in Thessaly area, Greece: a robust quadratic regression approach of soil pollution prediction, Environmental Science and Pollution Research,https://doi.org/10.1007/s11356-021-14673-0