DFTB study of energetic and structural properties of nano-onions with point defects in their structureRonaldo Méndez Hernández, Daniel Codorniu Pujals and Maykel Márquez MijaresEur. Phys. J. D, 77 8 (2023) 151DOI: https://doi.org/10.1140/epjd/s10053-023-00729-y