SEARCH Articles Figures Tables A-error And basis sets Balancing errors Basis contractions Basis extension error Basis set balance Basis set contraction Basis-set error Contracted Gaussian basis set Contracted Gaussians Contracted basis set Errors and Extension set Gaussian basis Gaussian basis set Lanthanide contraction Lanthanides concept Lanthanides lanthanide contraction The Contract The Gaussian basis set The Lanthanide Contraction The Lanthanides The setting