  Three body effects are studied for both asymmetric nuclear matter and pure
neutron matter to calculate the nuclear Equation of State . The Brueckner
Hartree Fock approximation is used using CD Bonn B and Argonne V18 potentials.
A two body density dependent Skyrme potential is added to reproduce the
empirical saturation point. Good agreement is obtained in comparison with exact
calculation including three body forces.
