Beliaev-Zelevinsky type expansion about the Hartree-Fock minimum / E. R. Marshalek and J. da Providência. Laboratório de Física da Universidade de Coimbra, Portugal. This work has been supported, in part, by Project CF/1, Instituto de Alta Cultura, Portugal, CERM 18/05, Box: CERM 18, Folder: 05. Eugene R. Marshalek Papers, ERM. University of Notre Dame Archives. https://archivesspace.library.nd.edu/repositories/2/archival_objects/204638 Accessed December 30, 2025.