  We investigate the properties of 3He, 4He, 6He, 7Li and 16O nuclei in nuclear
matter of finite temperature and density. A Dyson expansion of the many-body
Green function leads to few-body equations that are solved using the
ntegro-Differential Equation Approach (IDEA) and the Antisymmetrized Molecular
Dynamics (AMD) methods. The use of the latter method allows us to trace the
individual movement of the wave packet for each nucleon and the formation and
disintegration of quasi-nuclei in a changing thermodynamical nuclear matter
environment.
