The fine structure of the electron paramagnetic resonance spectra of VO and V2 point defects was studied in isotopically enriched 74Ge. By annealing at temperatures ranging from 150 to 400K, the electron paramagnetic resonance lines of VO and V2 centers were distinguished by comparing electron paramagnetic resonance and infra-red absorption spectra.

L.Khirunenko, N.Tripachko, V.Shakhovtsov, V.Yashnik, V.Shumov: Materials Science Forum, 1995, 196-201, 167-72