Skew-symmetric vanishing lattices / door Wilhelmus Antonius Maria JanssenVertex weighted Steiner tree games / Jeroen Kuipers, Vincent Feltkamp, Stef H. TijsSymmetry properties of the sixteen-vertex model / door Aris GaaffBifurcation analysis of the sixteen vertex model / Hendrik Matthijs SchramSkew-symmetric vanishing lattices / door Wilhelmus Antonius Maria JansenRandom walks on random lattices / Wilhelmus Theodorus Franciscus den Hollander