  We study the conditions for the formation and propagation of Korteweg-de
Vries (KdV) solitons in nuclear matter. In a previous work we have derived a
KdV equation from Euler and continuity equations in non-relativistic
hydrodynamics. In the present contribution we extend our formalism to
relativistic fluids. We present results for a given equation of state, which is
based on quantum hadrodynamics (QHD).
