Markus Chimani Maria Kandyba Ivana Ljubic Petra Mutzel Strong Formulations for 2-Node-Connected Steiner Network Problems. 190-200 2008 COCOA http://dx.doi.org/10.1007/978-3-540-85097-7_18 conf/cocoa/2008 db/conf/cocoa/cocoa2008.html#ChimaniKLM08