A cover-preserving embedding of semimodular lattices into geometric lattices

Extending former results by G. Grätzer and E.W. Kiss (1986) [5], and M. Wild (1993) [9] on finite (upper) semimodular lattices, we prove that each semimodular lattice L of finite length has a cover-preserving embedding into a geometric lattice G of the same length. The number of atoms of our G equals the number of join-irreducible elements of L.