On Atomistic Algebraic Lattices with Covering Property Manfred Stern — 1984 Beiträge zur Algebra und Geometrie = Contributions to algebra and geometry
On centrally symmetric graphs Manfred Stern — 1996 Mathematica Bohemica In this note we extend results on the covering graphs of modular lattices (Zelinka) and semimodular lattices (Gedeonova, Duffus and Rival) to the covering graph of certain graded lattices.