A study of defects and impurities in doped detonation nanodiamonds by EPR, Raman scattering, and XRD methods - Ju. Dolmatov; N. M. Lapchuk; T. M. Lapchuk; B. T.T. Nguyen; V. Myllymдki; A. Vehanen; Ju. Jakovlev (Superhard Materials, 2016)