Citation: P. Costeseque et al., ON THE MIGRATION OF THE PARAFFINS AND ISOPRENOIDS WITHIN CRUDE OILS SUBMITTED TO THERMOGRAVITATIONAL DIFFUSION IN POROUS-MEDIUM, Comptes rendus de l'Academie des sciences. Serie II. Mecanique, physique, chimie, astronomie, 320(4), 1995, pp. 265-271