1. L. E. McKeen Reduced Density Operators and Reduced Transition Operators Expanded over Irreducible Tensor Operators 1980 297
2. L. E. McKeen Program to Calculate a Symmetry-Related Family of 1-Particle Reduced Density Operators and/or Reduced Transition Operators Within a Manifold of Degenerate Atomic States (or Between Two Such Manifolds), Given the Wavefunction (or the 1-Particle Reduced Density Matrix) of the M L = L , M S = S State of the Manifold, (or in the Inter-manifold Case, the Corresponding Wavefunctions or their 1-Particle Reduced Transition Matrix)
3. Carlos F. Bungé Annik Bungé QCPE 81 from Quantum Chemistry Program Exchange, Chemistry Department Indiana University Bloomington
4. Symmetry eigenfunctions suitable for many-electron theories and calculations. I. Mainly atoms