Approximate Formulas for Many-Center Integrals in the Theory of Molecules and Crystals Open PDF Document Details Document Type Technical Report Publication Date Jan 01, 1953 Accession Number AD0019145 Entities Organizations University of Chicago Tags DTIC Thesaurus Topics Alkali Metals Atomic Orbitals Center Of Gravity Charge Density Crystals Gravity Ground State Integrals Ionic Crystals Military Research Molecules Multiplication Factor Physics Universities Wave Functions