(1)
Papadopoulos, G. J.; Koutroulos, C. G.; Grypeos, M. E. Relativistic Expressions for the r.m.S. Radii of the λ-Particle Orbits in Hypernuclei and of the Corresponding Potential Energies. HNPS Adv Nucl Phys 2020, 5, 125-138.