1. Balakrishnan, A., Mangnanti, T.L., Mirchandani, P.: Network design. In: Dell’Amico, M., Maffioli, F., Martello, S. (eds.) Annotated Bibliographies in Combinatorial Optimization, chapter 18, pp. 311–334. Wiley, Chichester (1997)
2. Borndörfer, R., Friedow, I., Karbstein, M.: Optimierung des Linienplans 2010 in Potsdam. Der Nahverkehr 30(4), 34–39 (2012)
3. Borndörfer, R., Hoàng, N.D., Karbstein, M., Koch, T., Martin, A.: How many Steiner terminals can you connect in 20 years? In: Jünger, M., Reinelt, G. (eds.) Facets of Combinatorial Optimization; Festschrift for Martin Grötschel, pp. 215–244. Springer (2013)
4. Borndörfer, R., Karbstein, M.: Metric inequalities for routings on direct connections with application to line planning. Discrete Optimization, 18, pp. 56–73 (2015)
5. Borndörfer, R., Karbstein, M., Pfetsch, M.E.: The Steiner connectivity problem. Math. Program. 142(1), 133–167 (2013)