The Slepian-Wolf coding problem for two sources is considered. It is known that vertices of the Slepian-Wolf region can be achieved with a complexity which is significantly lower than that of a general point and do not require that encoders are synchronized. It is shown that by splitting a source into two virtual sources one can reduce the problem of coding an arbitrary point to that of coding a vertex of a three-dimensional Slepian Wolf region. This approach generalizes to arbitrary number of sources.