1. The connected p-center problem on cactus graphs;Bai;Theor. Comput. Sci.,2018
2. Graph Theory with Applications, Newyork;Bondy,2010
3. The connected p-median problem on block graphs;Chang;Optim. Lett.,2016
4. Facility Location - Applications and Theory;Drezner,2002
5. Multicriteria Optimization;Ehrgott,2005