Hazem Abdelsalam, T. Espinosa-Ortega, and Igor Luk’yanchuk, Electronic and magnetic properties of graphite quantum dots, Low Temp. Phys. 41, (2015) [Fiz. Nizk. Temp. 41, 508-513, (2015)] DOI: https://doi.org/10.1063/1.4919377 .