The study of displacement of immiscible fluids in porous media with constant pressure drop by means of nuclear tracers A. Calvo, R. Chertcoff, M. Rosen et E. GuyonRev. Phys. Appl. (Paris), 24 5 (1989) 553-561DOI: https://doi.org/10.1051/rphysap:01989002405055300
