Electronic Structure of the Alkali Earth Metals and Their Oxides Electronic Structure of the Alkali Earth Metals and Their Oxides: Paper by V.A. Sashin, M.J. Ford, and M A Bolorizadeh of the Physics Dept., Flinders University of South Australia. [PDF] (Alkali Earth Metals) http://www.ansto.gov.au/ainse/nta/nta12.pdf
Visual Elements: The Alkaline Earth Metals Visual Elements: The Alkaline Earth Metals: Overview, general properties, and chemical data for the group. (Alkali Earth Metals) http://www.chemsoc.org/viselements/pages/data/intro_groupii_data.html