I. Ljubic, G. Raidl: "A Memetic Algorithm for Minimum-Cost Vertex-Biconnectivity Augmentation of Graphs"; Journal of Heuristics, 9 (2003), 401 - 427.
http://aleph.ub.tuwien.ac.at/F?base=tuw01&func=find-c&ccl_term=AC04404523