TY - JOUR AU - Ekberg, J AU - Reader, Joseph C2 - Journal of the Optical Society of America B-Optical Physics DA - 1994-01-01 00:01:00 LA - en M1 - 11 PB - Journal of the Optical Society of America B-Optical Physics PY - 1994 TI - Spectrum and energy levels of five-times ionized niobium (NbVI) ER -