%0 Journal Article %T Order and Chaos in Roto--Vibrational States of Atomic Nuclei %A V. R. Manfredi %A L. Salasnich %J Physics %D 1995 %I arXiv %R 10.1142/S0218301395000249 %X Using a classical analytical criterion (that of curvature) and numerical results (Poincar\`e sections and spectral statistics), a transition order--chaos--order in the roto--vibrational model of atomic nuclei has been shown. Numerical calculations were performed for some deformed nuclei. %U http://arxiv.org/abs/nucl-th/9504014v1