Affine twin R-buildings. - Koen Struyve; Hendrik Van Maldeghem (Discret. Math., 2010)

Quadrangles embedded in metasymplectic spaces. - Koen Struyve (Eur. J. Comb., 2010)

The Triangle Groups (2, 4, 5) and (2, 5, 5) are not Systolic. - Annette Karrer; Petra Schwer; Koen Struyve (Graphs Comb., 2020)