Delendtsheer, Anne, Doyen, Jean, Siemons, Johannes and Tamburini, Chiara (1986) Doubly homogeneous 2-(v, k, 1) designs. Journal of Combinatorial Theory, Series A, 43 (1). pp. 140-145.
Key, Jennifer D., Siemons, Johannes and Wagner, Ascher (1986) Regular sets on the projective line. Journal of Geometry, 27 (2). pp. 188-194. ISSN 0047-2468
Siemons, Johannes and Key, Jennifer D. (1986) Closure properties of the special linear groups. Ars Combinatoria, 22. pp. 107-117.
Siemons, Johannes, Magliveras, Spyros S. and Di Martino, Lino (1986) Does primitivity on lines imply primitivity on points? In: Proceedings of the seventeenth Southeastern international conference on combinatorics, graph theory, and computing (Boca Raton, Fla., 1986). Congressus Numerantium. A Conference Journal on Numerical Themes, USA, pp. 77-80.