Bonatsos, D., Lenis, D., Minkov, N., Petrellis, D., Raychev, P. P., & Terziev, P. A. (2020). Variational procedure leading from Davidson potentials to the E(5)and X(5) critical point symmetries. HNPS Advances in Nuclear Physics, 13, 10–16. https://doi.org/10.12681/hnps.2952