The following is an example of how to reference data from this database:
C. Froese Fischer and G. Tachiev, MCHF/MCDHF Collection, Version 2, Ref. No.,
Available online at http://physics.nist.gov/mchf
. (Year). National
Collections in the database are associated with a reference number that describes the method of computation and the individual(s) who performed the calculation. For completeness this reference number sometimes should be included.