Autor	Tytuł	Rok wydania
Dembczyśki J, Elantkowska M, Furmann B, Ruczkowski J, Stefańska D	Critical analysis of the methods of interpretation in the hyperfine structure of free atoms and ions; case of the model space (5d+6s)^3 of the lanthanum atom. J Phys B 2010;43(6):065001. doi:10.1088/0953-4075/43/6/065001	2010