Symmetry-projected variational calculations with the numerical suite TAURUS - I. Variation after particle-number projectionB. Bally, A. Sánchez-Fernández and T. R. RodríguezEur. Phys. J. A, 57 2 (2021) 69DOI: https://doi.org/10.1140/epja/s10050-021-00369-z