Addressing energy density functionals in the language of path-integrals I: comparative study of diagrammatic techniques applied to the (0 + 0)-D O(N)-symmetric 
-theory
and
Eur. Phys. J. A, 59 4 (2023) 91
Published online: 28 April 2023
DOI: 10.1140/epja/s10050-023-00933-9