Nicholas Yiching Chiang, Rajat Majumder, Alexander Yu. Sokolov. "Molecular
                    <i>g</i>
                    -tensors from spin–orbit quasidegenerate
                    <i>N</i>
                    -electron valence perturbation theory: Benchmarks, intruder-state mitigation, and practical guidelines." The Journal of Chemical Physics, 2026. doi:10.1063/5.0330438