Zolotarenko, Ol.D., et al. “Integration Atoms in Octa- and Tetrahedrical Internodes of BCC Crystals With a Free Surface”. Recent Contributions to Physics, vol. 2022, no. 2, June 2022, pp. 68-77, https://doi.org/10.26577/RCPh.2022.v81.i2.09.