Skvortsova, Vera, Nina Mironova-Ulmane, and Daina Riekstiņa. 2015. “Structure and Phase Changes in Natural and Synthetic Magnesium Aluminum Spinel”. ENVIRONMENT. TECHNOLOGY. RESOURCES. Proceedings of the International Scientific and Practical Conference 2 (August): 100-106. https://doi.org/10.17770/etr2011vol2.1002.