A note on the rank of self-dual polyhedra Stanislav Jendroľ; Brigitte Servatius; Herman Servatius — 1997 Mathematica Slovaca
Connectivity and planarity of Cayley graphs. Droms, Carl; Servatius, Brigitte; Servatius, Herman — 1998 Beiträge zur Algebra und Geometrie
The structure of locally finite two-connected graphs. Droms, Carl; Servatius, Brigitte; Servatius, Herman — 1995 The Electronic Journal of Combinatorics [electronic only]