On Embedding 2-Dimensional Toroidal Grids into de Bruijn Graphs with Clocked Congestion One. - Thomas Andreae; Michael Nölle; Christof Rempel; Gerald Schreiber (Combinatorics and Computer Science, 1995)

Dense Minors In Graphs Of Large Girth. - Reinhard Diestel; Christof Rempel (Comb., 2004)