D. Bohm and D. Pines: A Collective Description of Electron Interactions. I. Magnetic Interactions, Phys. Rev. 82, 625–634 (1951) (abstract)
D. Pines and D. Bohm: A Collective Description of Electron Interactions: II. Collective vs Individual Particle Aspects of the Interactions, Phys. Rev. 85, 338–353 (1952) (abstract)
D. Bohm and D. Pines: A Collective Description of Electron Interactions: III. Coulomb Interactions in a Degenerate Electron Gas, Phys. Rev. 92, 609–625 (1953) (abstract)