Hyperfine and nuclear quadrupole splitting of the NV ground state in 4H-SiC
F.F. Murzakhanov, B.V. Yavkin, G.V. Mamin, S.B. Orlinskii, H.J. von Bardeleben, T. Biktagirov, U. Gerstmann, V.A. Soltamov, Physical Review B 103 (2021) 245203.